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Finding the Fourth Proportional to 123,552.97, 170,510.13 and 69,842.68

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Solution

The fourth proportional to 123,552.97, 170,510.13 and 69,842.68 is: 96,386.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,552.97 : 170,510.13 = 69,842.68 : x
  2. Step 2: Convert to fraction form
    123,552.97/170,510.13 = 69,842.68/x
  3. Step 3: Cross multiply
    123,552.97x = 170,510.13 × 69,842.68
  4. Step 4: Simplify right side
    123,552.97x = 11,908,884,020.07
  5. Step 5: Solve for x
    x = 11,908,884,020.07/123,552.97
  6. Step 6: Final answer
    x = 96,386.87

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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.