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Finding the Fourth Proportional to 125,027.85, 172,540.49 and 70,582.89

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Solution

The fourth proportional to 125,027.85, 172,540.49 and 70,582.89 is: 97,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,027.85 : 172,540.49 = 70,582.89 : x
  2. Step 2: Convert to fraction form
    125,027.85/172,540.49 = 70,582.89/x
  3. Step 3: Cross multiply
    125,027.85x = 172,540.49 × 70,582.89
  4. Step 4: Simplify right side
    125,027.85x = 12,178,406,073.30
  5. Step 5: Solve for x
    x = 12,178,406,073.30/125,027.85
  6. Step 6: Final answer
    x = 97,405.55

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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.