Home / 113,689.38-170,436.87-43,618.98

Finding the Fourth Proportional to 113,689.38, 170,436.87 and 43,618.98

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Solution

The fourth proportional to 113,689.38, 170,436.87 and 43,618.98 is: 65,391.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,689.38 : 170,436.87 = 43,618.98 : x
  2. Step 2: Convert to fraction form
    113,689.38/170,436.87 = 43,618.98/x
  3. Step 3: Cross multiply
    113,689.38x = 170,436.87 × 43,618.98
  4. Step 4: Simplify right side
    113,689.38x = 7,434,282,423.79
  5. Step 5: Solve for x
    x = 7,434,282,423.79/113,689.38
  6. Step 6: Final answer
    x = 65,391.18

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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.