Home / 98,228.72-147,344.13-78,631.85

Finding the Fourth Proportional to 98,228.72, 147,344.13 and 78,631.85

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Solution

The fourth proportional to 98,228.72, 147,344.13 and 78,631.85 is: 117,948.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,228.72 : 147,344.13 = 78,631.85 : x
  2. Step 2: Convert to fraction form
    98,228.72/147,344.13 = 78,631.85/x
  3. Step 3: Cross multiply
    98,228.72x = 147,344.13 × 78,631.85
  4. Step 4: Simplify right side
    98,228.72x = 11,585,941,528.54
  5. Step 5: Solve for x
    x = 11,585,941,528.54/98,228.72
  6. Step 6: Final answer
    x = 117,948.62

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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.