Home / 120,981.47-180,941.65-107,747.82

Finding the Fourth Proportional to 120,981.47, 180,941.65 and 107,747.82

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Solution

The fourth proportional to 120,981.47, 180,941.65 and 107,747.82 is: 161,149.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,981.47 : 180,941.65 = 107,747.82 : x
  2. Step 2: Convert to fraction form
    120,981.47/180,941.65 = 107,747.82/x
  3. Step 3: Cross multiply
    120,981.47x = 180,941.65 × 107,747.82
  4. Step 4: Simplify right side
    120,981.47x = 19,496,068,065.33
  5. Step 5: Solve for x
    x = 19,496,068,065.33/120,981.47
  6. Step 6: Final answer
    x = 161,149.21

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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.