Home / 105,839.38-158,717.56-42,647.70

Finding the Fourth Proportional to 105,839.38, 158,717.56 and 42,647.70

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Solution

The fourth proportional to 105,839.38, 158,717.56 and 42,647.70 is: 63,954.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,839.38 : 158,717.56 = 42,647.70 : x
  2. Step 2: Convert to fraction form
    105,839.38/158,717.56 = 42,647.70/x
  3. Step 3: Cross multiply
    105,839.38x = 158,717.56 × 42,647.70
  4. Step 4: Simplify right side
    105,839.38x = 6,768,938,883.61
  5. Step 5: Solve for x
    x = 6,768,938,883.61/105,839.38
  6. Step 6: Final answer
    x = 63,954.82

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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.