Home / 90,332.34-135,449.64-71,732.04

Finding the Fourth Proportional to 90,332.34, 135,449.64 and 71,732.04

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Solution

The fourth proportional to 90,332.34, 135,449.64 and 71,732.04 is: 107,559.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,332.34 : 135,449.64 = 71,732.04 : x
  2. Step 2: Convert to fraction form
    90,332.34/135,449.64 = 71,732.04/x
  3. Step 3: Cross multiply
    90,332.34x = 135,449.64 × 71,732.04
  4. Step 4: Simplify right side
    90,332.34x = 9,716,078,994.47
  5. Step 5: Solve for x
    x = 9,716,078,994.47/90,332.34
  6. Step 6: Final answer
    x = 107,559.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.