Home / 121,874,366.48-168,186,945.13-66,119,784.01

Finding the Fourth Proportional to 121,874,366.48, 168,186,945.13 and 66,119,784.01

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Solution

The fourth proportional to 121,874,366.48, 168,186,945.13 and 66,119,784.01 is: 91,245,475.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,874,366.48 : 168,186,945.13 = 66,119,784.01 : x
  2. Step 2: Convert to fraction form
    121,874,366.48/168,186,945.13 = 66,119,784.01/x
  3. Step 3: Cross multiply
    121,874,366.48x = 168,186,945.13 × 66,119,784.01
  4. Step 4: Simplify right side
    121,874,366.48x = 11,120,484,485,297,320
  5. Step 5: Solve for x
    x = 11,120,484,485,297,320/121,874,366.48
  6. Step 6: Final answer
    x = 91,245,475.21

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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.