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Finding the Fourth Proportional to 147,030.20, 220,545.30 and 84,649.40

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Solution

The fourth proportional to 147,030.20, 220,545.30 and 84,649.40 is: 126,974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,030.20 : 220,545.30 = 84,649.40 : x
  2. Step 2: Convert to fraction form
    147,030.20/220,545.30 = 84,649.40/x
  3. Step 3: Cross multiply
    147,030.20x = 220,545.30 × 84,649.40
  4. Step 4: Simplify right side
    147,030.20x = 18,669,027,317.82
  5. Step 5: Solve for x
    x = 18,669,027,317.82/147,030.20
  6. Step 6: Final answer
    x = 126,974.10

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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.