Home / 143,057,728,258.47-197,423,876,151.54-78,832,589,718.51

Finding the Fourth Proportional to 143,057,728,258.47, 197,423,876,151.54 and 78,832,589,718.51

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Solution

The fourth proportional to 143,057,728,258.47, 197,423,876,151.54 and 78,832,589,718.51 is: 108,791,294,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,057,728,258.47 : 197,423,876,151.54 = 78,832,589,718.51 : x
  2. Step 2: Convert to fraction form
    143,057,728,258.47/197,423,876,151.54 = 78,832,589,718.51/x
  3. Step 3: Cross multiply
    143,057,728,258.47x = 197,423,876,151.54 × 78,832,589,718.51
  4. Step 4: Simplify right side
    143,057,728,258.47x = 15,563,435,429,291,888,738,304
  5. Step 5: Solve for x
    x = 15,563,435,429,291,888,738,304/143,057,728,258.47
  6. Step 6: Final answer
    x = 108,791,294,386.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.