Home / 99,711.38-137,652.48-76,999.38

Finding the Fourth Proportional to 99,711.38, 137,652.48 and 76,999.38

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Solution

The fourth proportional to 99,711.38, 137,652.48 and 76,999.38 is: 106,298.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,711.38 : 137,652.48 = 76,999.38 : x
  2. Step 2: Convert to fraction form
    99,711.38/137,652.48 = 76,999.38/x
  3. Step 3: Cross multiply
    99,711.38x = 137,652.48 × 76,999.38
  4. Step 4: Simplify right side
    99,711.38x = 10,599,155,615.46
  5. Step 5: Solve for x
    x = 10,599,155,615.46/99,711.38
  6. Step 6: Final answer
    x = 106,298.35

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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.