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Finding the Fourth Proportional to 125,220.60, 187,830.90 and 87,822.90

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Solution

The fourth proportional to 125,220.60, 187,830.90 and 87,822.90 is: 131,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,220.60 : 187,830.90 = 87,822.90 : x
  2. Step 2: Convert to fraction form
    125,220.60/187,830.90 = 87,822.90/x
  3. Step 3: Cross multiply
    125,220.60x = 187,830.90 × 87,822.90
  4. Step 4: Simplify right side
    125,220.60x = 16,495,854,347.61
  5. Step 5: Solve for x
    x = 16,495,854,347.61/125,220.60
  6. Step 6: Final answer
    x = 131,734.35

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1.5x scale

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.