Home / 99,805.50-137,740.23-55,102.14

Finding the Fourth Proportional to 99,805.50, 137,740.23 and 55,102.14

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Solution

The fourth proportional to 99,805.50, 137,740.23 and 55,102.14 is: 76,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,805.50 : 137,740.23 = 55,102.14 : x
  2. Step 2: Convert to fraction form
    99,805.50/137,740.23 = 55,102.14/x
  3. Step 3: Cross multiply
    99,805.50x = 137,740.23 × 55,102.14
  4. Step 4: Simplify right side
    99,805.50x = 7,589,781,437.09
  5. Step 5: Solve for x
    x = 7,589,781,437.09/99,805.50
  6. Step 6: Final answer
    x = 76,045.72

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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.