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Finding the Fourth Proportional to 148,713.60, 205,221.32 and 85,047.60

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Solution

The fourth proportional to 148,713.60, 205,221.32 and 85,047.60 is: 117,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,713.60 : 205,221.32 = 85,047.60 : x
  2. Step 2: Convert to fraction form
    148,713.60/205,221.32 = 85,047.60/x
  3. Step 3: Cross multiply
    148,713.60x = 205,221.32 × 85,047.60
  4. Step 4: Simplify right side
    148,713.60x = 17,453,580,734.83
  5. Step 5: Solve for x
    x = 17,453,580,734.83/148,713.60
  6. Step 6: Final answer
    x = 117,363.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.