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Finding the Fourth Proportional to 146,715.60, 220,543.20 and 136,315.20

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Solution

The fourth proportional to 146,715.60, 220,543.20 and 136,315.20 is: 204,909.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,715.60 : 220,543.20 = 136,315.20 : x
  2. Step 2: Convert to fraction form
    146,715.60/220,543.20 = 136,315.20/x
  3. Step 3: Cross multiply
    146,715.60x = 220,543.20 × 136,315.20
  4. Step 4: Simplify right side
    146,715.60x = 30,063,390,416.64
  5. Step 5: Solve for x
    x = 30,063,390,416.64/146,715.60
  6. Step 6: Final answer
    x = 204,909.30

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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.