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Finding the Fourth Proportional to 125,113.59, 187,671.60 and 31,619.34

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Solution

The fourth proportional to 125,113.59, 187,671.60 and 31,619.34 is: 47,429.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,113.59 : 187,671.60 = 31,619.34 : x
  2. Step 2: Convert to fraction form
    125,113.59/187,671.60 = 31,619.34/x
  3. Step 3: Cross multiply
    125,113.59x = 187,671.60 × 31,619.34
  4. Step 4: Simplify right side
    125,113.59x = 5,934,052,128.74
  5. Step 5: Solve for x
    x = 5,934,052,128.74/125,113.59
  6. Step 6: Final answer
    x = 47,429.32

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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.