Home / 97,821.60-146,635.20-45,139.20

Finding the Fourth Proportional to 97,821.60, 146,635.20 and 45,139.20

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Solution

The fourth proportional to 97,821.60, 146,635.20 and 45,139.20 is: 67,663.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,821.60 : 146,635.20 = 45,139.20 : x
  2. Step 2: Convert to fraction form
    97,821.60/146,635.20 = 45,139.20/x
  3. Step 3: Cross multiply
    97,821.60x = 146,635.20 × 45,139.20
  4. Step 4: Simplify right side
    97,821.60x = 6,618,995,619.84
  5. Step 5: Solve for x
    x = 6,618,995,619.84/97,821.60
  6. Step 6: Final answer
    x = 67,663.95

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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.