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Finding the Fourth Proportional to 125,884.60, 188,826.90 and 42,778.60

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Solution

The fourth proportional to 125,884.60, 188,826.90 and 42,778.60 is: 64,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,884.60 : 188,826.90 = 42,778.60 : x
  2. Step 2: Convert to fraction form
    125,884.60/188,826.90 = 42,778.60/x
  3. Step 3: Cross multiply
    125,884.60x = 188,826.90 × 42,778.60
  4. Step 4: Simplify right side
    125,884.60x = 8,077,750,424.34
  5. Step 5: Solve for x
    x = 8,077,750,424.34/125,884.60
  6. Step 6: Final answer
    x = 64,167.90

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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.