Home / 103,689.25-143,089.54-58,367.12

Finding the Fourth Proportional to 103,689.25, 143,089.54 and 58,367.12

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Solution

The fourth proportional to 103,689.25, 143,089.54 and 58,367.12 is: 80,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.25 : 143,089.54 = 58,367.12 : x
  2. Step 2: Convert to fraction form
    103,689.25/143,089.54 = 58,367.12/x
  3. Step 3: Cross multiply
    103,689.25x = 143,089.54 × 58,367.12
  4. Step 4: Simplify right side
    103,689.25x = 8,351,723,490.56
  5. Step 5: Solve for x
    x = 8,351,723,490.56/103,689.25
  6. Step 6: Final answer
    x = 80,545.70

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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.