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Finding the Fourth Proportional to 125,008.74, 172,512.51 and 67,648.05

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Solution

The fourth proportional to 125,008.74, 172,512.51 and 67,648.05 is: 93,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,008.74 : 172,512.51 = 67,648.05 : x
  2. Step 2: Convert to fraction form
    125,008.74/172,512.51 = 67,648.05/x
  3. Step 3: Cross multiply
    125,008.74x = 172,512.51 × 67,648.05
  4. Step 4: Simplify right side
    125,008.74x = 11,670,134,902.11
  5. Step 5: Solve for x
    x = 11,670,134,902.11/125,008.74
  6. Step 6: Final answer
    x = 93,354.56

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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.