Home / 113,872.47-157,132.07-66,116.49

Finding the Fourth Proportional to 113,872.47, 157,132.07 and 66,116.49

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Solution

The fourth proportional to 113,872.47, 157,132.07 and 66,116.49 is: 91,233.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,872.47 : 157,132.07 = 66,116.49 : x
  2. Step 2: Convert to fraction form
    113,872.47/157,132.07 = 66,116.49/x
  3. Step 3: Cross multiply
    113,872.47x = 157,132.07 × 66,116.49
  4. Step 4: Simplify right side
    113,872.47x = 10,389,020,934.83
  5. Step 5: Solve for x
    x = 10,389,020,934.83/113,872.47
  6. Step 6: Final answer
    x = 91,233.82

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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.