Home / 214,038.72-321,061.68-80,981.64

Finding the Fourth Proportional to 214,038.72, 321,061.68 and 80,981.64

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Solution

The fourth proportional to 214,038.72, 321,061.68 and 80,981.64 is: 121,473.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,038.72 : 321,061.68 = 80,981.64 : x
  2. Step 2: Convert to fraction form
    214,038.72/321,061.68 = 80,981.64/x
  3. Step 3: Cross multiply
    214,038.72x = 321,061.68 × 80,981.64
  4. Step 4: Simplify right side
    214,038.72x = 26,000,101,387.56
  5. Step 5: Solve for x
    x = 26,000,101,387.56/214,038.72
  6. Step 6: Final answer
    x = 121,473.82

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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.