Home / 135,565.40-187,080.28-75,139.94

Finding the Fourth Proportional to 135,565.40, 187,080.28 and 75,139.94

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Solution

The fourth proportional to 135,565.40, 187,080.28 and 75,139.94 is: 103,693.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,565.40 : 187,080.28 = 75,139.94 : x
  2. Step 2: Convert to fraction form
    135,565.40/187,080.28 = 75,139.94/x
  3. Step 3: Cross multiply
    135,565.40x = 187,080.28 × 75,139.94
  4. Step 4: Simplify right side
    135,565.40x = 14,057,201,014.38
  5. Step 5: Solve for x
    x = 14,057,201,014.38/135,565.40
  6. Step 6: Final answer
    x = 103,693.13

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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.