Home / 99,772.20-149,831.10-96,661.80

Finding the Fourth Proportional to 99,772.20, 149,831.10 and 96,661.80

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Solution

The fourth proportional to 99,772.20, 149,831.10 and 96,661.80 is: 145,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,772.20 : 149,831.10 = 96,661.80 : x
  2. Step 2: Convert to fraction form
    99,772.20/149,831.10 = 96,661.80/x
  3. Step 3: Cross multiply
    99,772.20x = 149,831.10 × 96,661.80
  4. Step 4: Simplify right side
    99,772.20x = 14,482,943,821.98
  5. Step 5: Solve for x
    x = 14,482,943,821.98/99,772.20
  6. Step 6: Final answer
    x = 145,160.11

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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.