Home / 131,511.60-181,462.68-77,798.88

Finding the Fourth Proportional to 131,511.60, 181,462.68 and 77,798.88

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Solution

The fourth proportional to 131,511.60, 181,462.68 and 77,798.88 is: 107,348.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,511.60 : 181,462.68 = 77,798.88 : x
  2. Step 2: Convert to fraction form
    131,511.60/181,462.68 = 77,798.88/x
  3. Step 3: Cross multiply
    131,511.60x = 181,462.68 × 77,798.88
  4. Step 4: Simplify right side
    131,511.60x = 14,117,593,265.80
  5. Step 5: Solve for x
    x = 14,117,593,265.80/131,511.60
  6. Step 6: Final answer
    x = 107,348.65

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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.