Home / 135,115.61-186,478.07-77,753.76

Finding the Fourth Proportional to 135,115.61, 186,478.07 and 77,753.76

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Solution

The fourth proportional to 135,115.61, 186,478.07 and 77,753.76 is: 107,310.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,115.61 : 186,478.07 = 77,753.76 : x
  2. Step 2: Convert to fraction form
    135,115.61/186,478.07 = 77,753.76/x
  3. Step 3: Cross multiply
    135,115.61x = 186,478.07 × 77,753.76
  4. Step 4: Simplify right side
    135,115.61x = 14,499,371,100.04
  5. Step 5: Solve for x
    x = 14,499,371,100.04/135,115.61
  6. Step 6: Final answer
    x = 107,310.85

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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.