Home / 123,030.09-169,781.49-66,441.47

Finding the Fourth Proportional to 123,030.09, 169,781.49 and 66,441.47

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Solution

The fourth proportional to 123,030.09, 169,781.49 and 66,441.47 is: 91,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,030.09 : 169,781.49 = 66,441.47 : x
  2. Step 2: Convert to fraction form
    123,030.09/169,781.49 = 66,441.47/x
  3. Step 3: Cross multiply
    123,030.09x = 169,781.49 × 66,441.47
  4. Step 4: Simplify right side
    123,030.09x = 11,280,530,925.48
  5. Step 5: Solve for x
    x = 11,280,530,925.48/123,030.09
  6. Step 6: Final answer
    x = 91,689.20

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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.