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Finding the Fourth Proportional to 102,885.68, 141,987.75 and 57,560.97

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Solution

The fourth proportional to 102,885.68, 141,987.75 and 57,560.97 is: 79,437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,885.68 : 141,987.75 = 57,560.97 : x
  2. Step 2: Convert to fraction form
    102,885.68/141,987.75 = 57,560.97/x
  3. Step 3: Cross multiply
    102,885.68x = 141,987.75 × 57,560.97
  4. Step 4: Simplify right side
    102,885.68x = 8,172,952,618.12
  5. Step 5: Solve for x
    x = 8,172,952,618.12/102,885.68
  6. Step 6: Final answer
    x = 79,437.22

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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.