Home / 90,281.83-134,829.89-72,539.44

Finding the Fourth Proportional to 90,281.83, 134,829.89 and 72,539.44

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Solution

The fourth proportional to 90,281.83, 134,829.89 and 72,539.44 is: 108,332.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,281.83 : 134,829.89 = 72,539.44 : x
  2. Step 2: Convert to fraction form
    90,281.83/134,829.89 = 72,539.44/x
  3. Step 3: Cross multiply
    90,281.83x = 134,829.89 × 72,539.44
  4. Step 4: Simplify right side
    90,281.83x = 9,780,484,715.86
  5. Step 5: Solve for x
    x = 9,780,484,715.86/90,281.83
  6. Step 6: Final answer
    x = 108,332.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.