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Finding the Fourth Proportional to 125,098.59, 172,629.21 and 73,408.76

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Solution

The fourth proportional to 125,098.59, 172,629.21 and 73,408.76 is: 101,300.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,098.59 : 172,629.21 = 73,408.76 : x
  2. Step 2: Convert to fraction form
    125,098.59/172,629.21 = 73,408.76/x
  3. Step 3: Cross multiply
    125,098.59x = 172,629.21 × 73,408.76
  4. Step 4: Simplify right side
    125,098.59x = 12,672,496,305.38
  5. Step 5: Solve for x
    x = 12,672,496,305.38/125,098.59
  6. Step 6: Final answer
    x = 101,300.07

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1.5x scale

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.