Home / 112,732.80-155,571.20-62,431.76

Finding the Fourth Proportional to 112,732.80, 155,571.20 and 62,431.76

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Solution

The fourth proportional to 112,732.80, 155,571.20 and 62,431.76 is: 86,155.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,732.80 : 155,571.20 = 62,431.76 : x
  2. Step 2: Convert to fraction form
    112,732.80/155,571.20 = 62,431.76/x
  3. Step 3: Cross multiply
    112,732.80x = 155,571.20 × 62,431.76
  4. Step 4: Simplify right side
    112,732.80x = 9,712,583,821.31
  5. Step 5: Solve for x
    x = 9,712,583,821.31/112,732.80
  6. Step 6: Final answer
    x = 86,155.79

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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.