Home / 125,728.80-173,491.12-72,010.60

Finding the Fourth Proportional to 125,728.80, 173,491.12 and 72,010.60

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Solution

The fourth proportional to 125,728.80, 173,491.12 and 72,010.60 is: 99,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,728.80 : 173,491.12 = 72,010.60 : x
  2. Step 2: Convert to fraction form
    125,728.80/173,491.12 = 72,010.60/x
  3. Step 3: Cross multiply
    125,728.80x = 173,491.12 × 72,010.60
  4. Step 4: Simplify right side
    125,728.80x = 12,493,199,645.87
  5. Step 5: Solve for x
    x = 12,493,199,645.87/125,728.80
  6. Step 6: Final answer
    x = 99,366.25

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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.