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Finding the Fourth Proportional to 125,225.56, 172,810.02 and 68,637.88

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Solution

The fourth proportional to 125,225.56, 172,810.02 and 68,637.88 is: 94,719.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,225.56 : 172,810.02 = 68,637.88 : x
  2. Step 2: Convert to fraction form
    125,225.56/172,810.02 = 68,637.88/x
  3. Step 3: Cross multiply
    125,225.56x = 172,810.02 × 68,637.88
  4. Step 4: Simplify right side
    125,225.56x = 11,861,313,415.56
  5. Step 5: Solve for x
    x = 11,861,313,415.56/125,225.56
  6. Step 6: Final answer
    x = 94,719.59

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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.