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Finding the Fourth Proportional to 425,159.88, 637,700.94 and 129,671.88

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Solution

The fourth proportional to 425,159.88, 637,700.94 and 129,671.88 is: 194,495.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,159.88 : 637,700.94 = 129,671.88 : x
  2. Step 2: Convert to fraction form
    425,159.88/637,700.94 = 129,671.88/x
  3. Step 3: Cross multiply
    425,159.88x = 637,700.94 × 129,671.88
  4. Step 4: Simplify right side
    425,159.88x = 82,691,879,767.57
  5. Step 5: Solve for x
    x = 82,691,879,767.57/425,159.88
  6. Step 6: Final answer
    x = 194,495.96

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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.