Home / 99,272.20-148,908.30-43,139.20

Finding the Fourth Proportional to 99,272.20, 148,908.30 and 43,139.20

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Solution

The fourth proportional to 99,272.20, 148,908.30 and 43,139.20 is: 64,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,272.20 : 148,908.30 = 43,139.20 : x
  2. Step 2: Convert to fraction form
    99,272.20/148,908.30 = 43,139.20/x
  3. Step 3: Cross multiply
    99,272.20x = 148,908.30 × 43,139.20
  4. Step 4: Simplify right side
    99,272.20x = 6,423,784,935.36
  5. Step 5: Solve for x
    x = 6,423,784,935.36/99,272.20
  6. Step 6: Final answer
    x = 64,708.80

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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.