Home / 99,666.08-137,540.28-54,343.68

Finding the Fourth Proportional to 99,666.08, 137,540.28 and 54,343.68

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Solution

The fourth proportional to 99,666.08, 137,540.28 and 54,343.68 is: 74,994.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,666.08 : 137,540.28 = 54,343.68 : x
  2. Step 2: Convert to fraction form
    99,666.08/137,540.28 = 54,343.68/x
  3. Step 3: Cross multiply
    99,666.08x = 137,540.28 × 54,343.68
  4. Step 4: Simplify right side
    99,666.08x = 7,474,444,963.43
  5. Step 5: Solve for x
    x = 7,474,444,963.43/99,666.08
  6. Step 6: Final answer
    x = 74,994.87

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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.