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Finding the Fourth Proportional to 125,353.56, 172,999.74 and 71,628.17

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Solution

The fourth proportional to 125,353.56, 172,999.74 and 71,628.17 is: 98,853.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,353.56 : 172,999.74 = 71,628.17 : x
  2. Step 2: Convert to fraction form
    125,353.56/172,999.74 = 71,628.17/x
  3. Step 3: Cross multiply
    125,353.56x = 172,999.74 × 71,628.17
  4. Step 4: Simplify right side
    125,353.56x = 12,391,653,921.68
  5. Step 5: Solve for x
    x = 12,391,653,921.68/125,353.56
  6. Step 6: Final answer
    x = 98,853.63

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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.