Home / 105,719.74-158,540.10-42,518.53

Finding the Fourth Proportional to 105,719.74, 158,540.10 and 42,518.53

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Solution

The fourth proportional to 105,719.74, 158,540.10 and 42,518.53 is: 63,761.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,719.74 : 158,540.10 = 42,518.53 : x
  2. Step 2: Convert to fraction form
    105,719.74/158,540.10 = 42,518.53/x
  3. Step 3: Cross multiply
    105,719.74x = 158,540.10 × 42,518.53
  4. Step 4: Simplify right side
    105,719.74x = 6,740,891,998.05
  5. Step 5: Solve for x
    x = 6,740,891,998.05/105,719.74
  6. Step 6: Final answer
    x = 63,761.90

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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.