Home / 99,904.13-149,127.40-87,292.66

Finding the Fourth Proportional to 99,904.13, 149,127.40 and 87,292.66

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Solution

The fourth proportional to 99,904.13, 149,127.40 and 87,292.66 is: 130,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,904.13 : 149,127.40 = 87,292.66 : x
  2. Step 2: Convert to fraction form
    99,904.13/149,127.40 = 87,292.66/x
  3. Step 3: Cross multiply
    99,904.13x = 149,127.40 × 87,292.66
  4. Step 4: Simplify right side
    99,904.13x = 13,017,728,105.73
  5. Step 5: Solve for x
    x = 13,017,728,105.73/99,904.13
  6. Step 6: Final answer
    x = 130,302.20

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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.