Home / 150,159.78-207,130.41-99,172.61

Finding the Fourth Proportional to 150,159.78, 207,130.41 and 99,172.61

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Solution

The fourth proportional to 150,159.78, 207,130.41 and 99,172.61 is: 136,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,159.78 : 207,130.41 = 99,172.61 : x
  2. Step 2: Convert to fraction form
    150,159.78/207,130.41 = 99,172.61/x
  3. Step 3: Cross multiply
    150,159.78x = 207,130.41 × 99,172.61
  4. Step 4: Simplify right side
    150,159.78x = 20,541,662,874.21
  5. Step 5: Solve for x
    x = 20,541,662,874.21/150,159.78
  6. Step 6: Final answer
    x = 136,798.70

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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.