Home / 102,689.20-141,651.98-61,824.92

Finding the Fourth Proportional to 102,689.20, 141,651.98 and 61,824.92

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Solution

The fourth proportional to 102,689.20, 141,651.98 and 61,824.92 is: 85,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,689.20 : 141,651.98 = 61,824.92 : x
  2. Step 2: Convert to fraction form
    102,689.20/141,651.98 = 61,824.92/x
  3. Step 3: Cross multiply
    102,689.20x = 141,651.98 × 61,824.92
  4. Step 4: Simplify right side
    102,689.20x = 8,757,622,331.34
  5. Step 5: Solve for x
    x = 8,757,622,331.34/102,689.20
  6. Step 6: Final answer
    x = 85,282.80

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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.