Home / 147,000.80-220,543.07-72,143.43

Finding the Fourth Proportional to 147,000.80, 220,543.07 and 72,143.43

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Solution

The fourth proportional to 147,000.80, 220,543.07 and 72,143.43 is: 108,235.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,000.80 : 220,543.07 = 72,143.43 : x
  2. Step 2: Convert to fraction form
    147,000.80/220,543.07 = 72,143.43/x
  3. Step 3: Cross multiply
    147,000.80x = 220,543.07 × 72,143.43
  4. Step 4: Simplify right side
    147,000.80x = 15,910,733,171.81
  5. Step 5: Solve for x
    x = 15,910,733,171.81/147,000.80
  6. Step 6: Final answer
    x = 108,235.69

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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.