Home / 99,139.12-148,621.08-75,869.44

Finding the Fourth Proportional to 99,139.12, 148,621.08 and 75,869.44

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Solution

The fourth proportional to 99,139.12, 148,621.08 and 75,869.44 is: 113,737.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,139.12 : 148,621.08 = 75,869.44 : x
  2. Step 2: Convert to fraction form
    99,139.12/148,621.08 = 75,869.44/x
  3. Step 3: Cross multiply
    99,139.12x = 148,621.08 × 75,869.44
  4. Step 4: Simplify right side
    99,139.12x = 11,275,798,111.80
  5. Step 5: Solve for x
    x = 11,275,798,111.80/99,139.12
  6. Step 6: Final answer
    x = 113,737.12

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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.