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Finding the Fourth Proportional to 125,876.10, 188,814.15 and 42,770.10

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Solution

The fourth proportional to 125,876.10, 188,814.15 and 42,770.10 is: 64,155.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,876.10 : 188,814.15 = 42,770.10 : x
  2. Step 2: Convert to fraction form
    125,876.10/188,814.15 = 42,770.10/x
  3. Step 3: Cross multiply
    125,876.10x = 188,814.15 × 42,770.10
  4. Step 4: Simplify right side
    125,876.10x = 8,075,600,076.92
  5. Step 5: Solve for x
    x = 8,075,600,076.92/125,876.10
  6. Step 6: Final answer
    x = 64,155.15

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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.