Home / 103,517.57-142,859.31-58,209.81

Finding the Fourth Proportional to 103,517.57, 142,859.31 and 58,209.81

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Solution

The fourth proportional to 103,517.57, 142,859.31 and 58,209.81 is: 80,332.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,517.57 : 142,859.31 = 58,209.81 : x
  2. Step 2: Convert to fraction form
    103,517.57/142,859.31 = 58,209.81/x
  3. Step 3: Cross multiply
    103,517.57x = 142,859.31 × 58,209.81
  4. Step 4: Simplify right side
    103,517.57x = 8,315,813,146.31
  5. Step 5: Solve for x
    x = 8,315,813,146.31/103,517.57
  6. Step 6: Final answer
    x = 80,332.39

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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.