Home / 125,012.32-172,512.69-71,314.72

Finding the Fourth Proportional to 125,012.32, 172,512.69 and 71,314.72

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Solution

The fourth proportional to 125,012.32, 172,512.69 and 71,314.72 is: 98,411.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,012.32 : 172,512.69 = 71,314.72 : x
  2. Step 2: Convert to fraction form
    125,012.32/172,512.69 = 71,314.72/x
  3. Step 3: Cross multiply
    125,012.32x = 172,512.69 × 71,314.72
  4. Step 4: Simplify right side
    125,012.32x = 12,302,694,183.80
  5. Step 5: Solve for x
    x = 12,302,694,183.80/125,012.32
  6. Step 6: Final answer
    x = 98,411.85

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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.