Home / 147,543.30-221,023.35-80,864.10

Finding the Fourth Proportional to 147,543.30, 221,023.35 and 80,864.10

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Solution

The fourth proportional to 147,543.30, 221,023.35 and 80,864.10 is: 121,136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,543.30 : 221,023.35 = 80,864.10 : x
  2. Step 2: Convert to fraction form
    147,543.30/221,023.35 = 80,864.10/x
  3. Step 3: Cross multiply
    147,543.30x = 221,023.35 × 80,864.10
  4. Step 4: Simplify right side
    147,543.30x = 17,872,854,276.74
  5. Step 5: Solve for x
    x = 17,872,854,276.74/147,543.30
  6. Step 6: Final answer
    x = 121,136.33

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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.