Home / 105,180.78-145,162.17-59,869.74

Finding the Fourth Proportional to 105,180.78, 145,162.17 and 59,869.74

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Solution

The fourth proportional to 105,180.78, 145,162.17 and 59,869.74 is: 82,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,180.78 : 145,162.17 = 59,869.74 : x
  2. Step 2: Convert to fraction form
    105,180.78/145,162.17 = 59,869.74/x
  3. Step 3: Cross multiply
    105,180.78x = 145,162.17 × 59,869.74
  4. Step 4: Simplify right side
    105,180.78x = 8,690,821,375.74
  5. Step 5: Solve for x
    x = 8,690,821,375.74/105,180.78
  6. Step 6: Final answer
    x = 82,627.47

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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.