Home / 98,818.20-148,182.40-42,631.72

Finding the Fourth Proportional to 98,818.20, 148,182.40 and 42,631.72

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Solution

The fourth proportional to 98,818.20, 148,182.40 and 42,631.72 is: 63,928.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,818.20 : 148,182.40 = 42,631.72 : x
  2. Step 2: Convert to fraction form
    98,818.20/148,182.40 = 42,631.72/x
  3. Step 3: Cross multiply
    98,818.20x = 148,182.40 × 42,631.72
  4. Step 4: Simplify right side
    98,818.20x = 6,317,270,585.73
  5. Step 5: Solve for x
    x = 6,317,270,585.73/98,818.20
  6. Step 6: Final answer
    x = 63,928.21

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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.