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Finding the Fourth Proportional to 123,029.60, 169,780.83 and 66,440.97

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Solution

The fourth proportional to 123,029.60, 169,780.83 and 66,440.97 is: 91,688.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,029.60 : 169,780.83 = 66,440.97 : x
  2. Step 2: Convert to fraction form
    123,029.60/169,780.83 = 66,440.97/x
  3. Step 3: Cross multiply
    123,029.60x = 169,780.83 × 66,440.97
  4. Step 4: Simplify right side
    123,029.60x = 11,280,402,700.40
  5. Step 5: Solve for x
    x = 11,280,402,700.40/123,029.60
  6. Step 6: Final answer
    x = 91,688.53

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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.