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Finding the Fourth Proportional to 125,396.58, 188,123.58 and 54,331.05

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Solution

The fourth proportional to 125,396.58, 188,123.58 and 54,331.05 is: 81,509.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,396.58 : 188,123.58 = 54,331.05 : x
  2. Step 2: Convert to fraction form
    125,396.58/188,123.58 = 54,331.05/x
  3. Step 3: Cross multiply
    125,396.58x = 188,123.58 × 54,331.05
  4. Step 4: Simplify right side
    125,396.58x = 10,220,951,631.16
  5. Step 5: Solve for x
    x = 10,220,951,631.16/125,396.58
  6. Step 6: Final answer
    x = 81,509.01

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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.