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Finding the Fourth Proportional to 129,717.68, 179,010.06 and 70,101.68

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Solution

The fourth proportional to 129,717.68, 179,010.06 and 70,101.68 is: 96,740.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,717.68 : 179,010.06 = 70,101.68 : x
  2. Step 2: Convert to fraction form
    129,717.68/179,010.06 = 70,101.68/x
  3. Step 3: Cross multiply
    129,717.68x = 179,010.06 × 70,101.68
  4. Step 4: Simplify right side
    129,717.68x = 12,548,905,942.90
  5. Step 5: Solve for x
    x = 12,548,905,942.90/129,717.68
  6. Step 6: Final answer
    x = 96,740.14

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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.