Home / 102,885.91-141,988.07-57,561.18

Finding the Fourth Proportional to 102,885.91, 141,988.07 and 57,561.18

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Solution

The fourth proportional to 102,885.91, 141,988.07 and 57,561.18 is: 79,437.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,885.91 : 141,988.07 = 57,561.18 : x
  2. Step 2: Convert to fraction form
    102,885.91/141,988.07 = 57,561.18/x
  3. Step 3: Cross multiply
    102,885.91x = 141,988.07 × 57,561.18
  4. Step 4: Simplify right side
    102,885.91x = 8,173,001,143.83
  5. Step 5: Solve for x
    x = 8,173,001,143.83/102,885.91
  6. Step 6: Final answer
    x = 79,437.52

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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.