Home / 150,129.46-207,088.41-99,142.66

Finding the Fourth Proportional to 150,129.46, 207,088.41 and 99,142.66

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Solution

The fourth proportional to 150,129.46, 207,088.41 and 99,142.66 is: 136,757.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,129.46 : 207,088.41 = 99,142.66 : x
  2. Step 2: Convert to fraction form
    150,129.46/207,088.41 = 99,142.66/x
  3. Step 3: Cross multiply
    150,129.46x = 207,088.41 × 99,142.66
  4. Step 4: Simplify right side
    150,129.46x = 20,531,295,822.57
  5. Step 5: Solve for x
    x = 20,531,295,822.57/150,129.46
  6. Step 6: Final answer
    x = 136,757.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.