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Finding the Fourth Proportional to 147,117.60, 220,906.80 and 84,909.60

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Solution

The fourth proportional to 147,117.60, 220,906.80 and 84,909.60 is: 127,497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,117.60 : 220,906.80 = 84,909.60 : x
  2. Step 2: Convert to fraction form
    147,117.60/220,906.80 = 84,909.60/x
  3. Step 3: Cross multiply
    147,117.60x = 220,906.80 × 84,909.60
  4. Step 4: Simplify right side
    147,117.60x = 18,757,108,025.28
  5. Step 5: Solve for x
    x = 18,757,108,025.28/147,117.60
  6. Step 6: Final answer
    x = 127,497.38

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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.