Home / 105,907.19-146,115.38-67,689.11

Finding the Fourth Proportional to 105,907.19, 146,115.38 and 67,689.11

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Solution

The fourth proportional to 105,907.19, 146,115.38 and 67,689.11 is: 93,387.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,907.19 : 146,115.38 = 67,689.11 : x
  2. Step 2: Convert to fraction form
    105,907.19/146,115.38 = 67,689.11/x
  3. Step 3: Cross multiply
    105,907.19x = 146,115.38 × 67,689.11
  4. Step 4: Simplify right side
    105,907.19x = 9,890,419,129.71
  5. Step 5: Solve for x
    x = 9,890,419,129.71/105,907.19
  6. Step 6: Final answer
    x = 93,387.61

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1.5x scale

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.