Home / 98,819.28-148,122.60-42,685.80

Finding the Fourth Proportional to 98,819.28, 148,122.60 and 42,685.80

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Solution

The fourth proportional to 98,819.28, 148,122.60 and 42,685.80 is: 63,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,819.28 : 148,122.60 = 42,685.80 : x
  2. Step 2: Convert to fraction form
    98,819.28/148,122.60 = 42,685.80/x
  3. Step 3: Cross multiply
    98,819.28x = 148,122.60 × 42,685.80
  4. Step 4: Simplify right side
    98,819.28x = 6,322,731,679.08
  5. Step 5: Solve for x
    x = 6,322,731,679.08/98,819.28
  6. Step 6: Final answer
    x = 63,982.77

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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.