Home / 99,913.46-137,972.65-64,165.75

Finding the Fourth Proportional to 99,913.46, 137,972.65 and 64,165.75

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Solution

The fourth proportional to 99,913.46, 137,972.65 and 64,165.75 is: 88,607.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,913.46 : 137,972.65 = 64,165.75 : x
  2. Step 2: Convert to fraction form
    99,913.46/137,972.65 = 64,165.75/x
  3. Step 3: Cross multiply
    99,913.46x = 137,972.65 × 64,165.75
  4. Step 4: Simplify right side
    99,913.46x = 8,853,117,716.46
  5. Step 5: Solve for x
    x = 8,853,117,716.46/99,913.46
  6. Step 6: Final answer
    x = 88,607.86

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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.