Home / 98,836.20-148,217.85-42,678.90

Finding the Fourth Proportional to 98,836.20, 148,217.85 and 42,678.90

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Solution

The fourth proportional to 98,836.20, 148,217.85 and 42,678.90 is: 64,002.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,836.20 : 148,217.85 = 42,678.90 : x
  2. Step 2: Convert to fraction form
    98,836.20/148,217.85 = 42,678.90/x
  3. Step 3: Cross multiply
    98,836.20x = 148,217.85 × 42,678.90
  4. Step 4: Simplify right side
    98,836.20x = 6,325,774,798.37
  5. Step 5: Solve for x
    x = 6,325,774,798.37/98,836.20
  6. Step 6: Final answer
    x = 64,002.61

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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.