Home / 98,731.72-148,100.40-38,757.70

Finding the Fourth Proportional to 98,731.72, 148,100.40 and 38,757.70

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Solution

The fourth proportional to 98,731.72, 148,100.40 and 38,757.70 is: 58,137.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,731.72 : 148,100.40 = 38,757.70 : x
  2. Step 2: Convert to fraction form
    98,731.72/148,100.40 = 38,757.70/x
  3. Step 3: Cross multiply
    98,731.72x = 148,100.40 × 38,757.70
  4. Step 4: Simplify right side
    98,731.72x = 5,740,030,873.08
  5. Step 5: Solve for x
    x = 5,740,030,873.08/98,731.72
  6. Step 6: Final answer
    x = 58,137.66

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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.