Home / 99,904.20-149,127.50-87,292.73

Finding the Fourth Proportional to 99,904.20, 149,127.50 and 87,292.73

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Solution

The fourth proportional to 99,904.20, 149,127.50 and 87,292.73 is: 130,302.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,904.20 : 149,127.50 = 87,292.73 : x
  2. Step 2: Convert to fraction form
    99,904.20/149,127.50 = 87,292.73/x
  3. Step 3: Cross multiply
    99,904.20x = 149,127.50 × 87,292.73
  4. Step 4: Simplify right side
    99,904.20x = 13,017,747,184.13
  5. Step 5: Solve for x
    x = 13,017,747,184.13/99,904.20
  6. Step 6: Final answer
    x = 130,302.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.