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Finding the Fourth Proportional to 115,652.40, 173,478.60 and 71,134.80

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Solution

The fourth proportional to 115,652.40, 173,478.60 and 71,134.80 is: 106,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,652.40 : 173,478.60 = 71,134.80 : x
  2. Step 2: Convert to fraction form
    115,652.40/173,478.60 = 71,134.80/x
  3. Step 3: Cross multiply
    115,652.40x = 173,478.60 × 71,134.80
  4. Step 4: Simplify right side
    115,652.40x = 12,340,365,515.28
  5. Step 5: Solve for x
    x = 12,340,365,515.28/115,652.40
  6. Step 6: Final answer
    x = 106,702.20

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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.