Home / 129,337.32-178,483.68-72,748.56

Finding the Fourth Proportional to 129,337.32, 178,483.68 and 72,748.56

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Solution

The fourth proportional to 129,337.32, 178,483.68 and 72,748.56 is: 100,391.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,337.32 : 178,483.68 = 72,748.56 : x
  2. Step 2: Convert to fraction form
    129,337.32/178,483.68 = 72,748.56/x
  3. Step 3: Cross multiply
    129,337.32x = 178,483.68 × 72,748.56
  4. Step 4: Simplify right side
    129,337.32x = 12,984,430,703.50
  5. Step 5: Solve for x
    x = 12,984,430,703.50/129,337.32
  6. Step 6: Final answer
    x = 100,391.99

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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.