Home / 125,125.64-187,688.46-31,631.39

Finding the Fourth Proportional to 125,125.64, 187,688.46 and 31,631.39

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Solution

The fourth proportional to 125,125.64, 187,688.46 and 31,631.39 is: 47,447.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,125.64 : 187,688.46 = 31,631.39 : x
  2. Step 2: Convert to fraction form
    125,125.64/187,688.46 = 31,631.39/x
  3. Step 3: Cross multiply
    125,125.64x = 187,688.46 × 31,631.39
  4. Step 4: Simplify right side
    125,125.64x = 5,936,846,876.76
  5. Step 5: Solve for x
    x = 5,936,846,876.76/125,125.64
  6. Step 6: Final answer
    x = 47,447.09

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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.