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Finding the Fourth Proportional to 125,672, 188,556.48 and 42,565.76

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Solution

The fourth proportional to 125,672, 188,556.48 and 42,565.76 is: 63,865.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,672 : 188,556.48 = 42,565.76 : x
  2. Step 2: Convert to fraction form
    125,672/188,556.48 = 42,565.76/x
  3. Step 3: Cross multiply
    125,672x = 188,556.48 × 42,565.76
  4. Step 4: Simplify right side
    125,672x = 8,026,049,874.12
  5. Step 5: Solve for x
    x = 8,026,049,874.12/125,672
  6. Step 6: Final answer
    x = 63,865.06

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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.