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Finding the Fourth Proportional to 147,397.80, 220,950.90 and 72,456.60

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Solution

The fourth proportional to 147,397.80, 220,950.90 and 72,456.60 is: 108,613.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,397.80 : 220,950.90 = 72,456.60 : x
  2. Step 2: Convert to fraction form
    147,397.80/220,950.90 = 72,456.60/x
  3. Step 3: Cross multiply
    147,397.80x = 220,950.90 × 72,456.60
  4. Step 4: Simplify right side
    147,397.80x = 16,009,350,980.94
  5. Step 5: Solve for x
    x = 16,009,350,980.94/147,397.80
  6. Step 6: Final answer
    x = 108,613.23

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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.