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Finding the Fourth Proportional to 125,102.85, 172,641.20 and 67,741.59

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Solution

The fourth proportional to 125,102.85, 172,641.20 and 67,741.59 is: 93,482.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,102.85 : 172,641.20 = 67,741.59 : x
  2. Step 2: Convert to fraction form
    125,102.85/172,641.20 = 67,741.59/x
  3. Step 3: Cross multiply
    125,102.85x = 172,641.20 × 67,741.59
  4. Step 4: Simplify right side
    125,102.85x = 11,694,989,048.80
  5. Step 5: Solve for x
    x = 11,694,989,048.80/125,102.85
  6. Step 6: Final answer
    x = 93,482.99

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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.