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Finding the Fourth Proportional to 129,775.38, 179,094.31 and 75,323.46

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Solution

The fourth proportional to 129,775.38, 179,094.31 and 75,323.46 is: 103,948.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,775.38 : 179,094.31 = 75,323.46 : x
  2. Step 2: Convert to fraction form
    129,775.38/179,094.31 = 75,323.46/x
  3. Step 3: Cross multiply
    129,775.38x = 179,094.31 × 75,323.46
  4. Step 4: Simplify right side
    129,775.38x = 13,490,003,578.81
  5. Step 5: Solve for x
    x = 13,490,003,578.81/129,775.38
  6. Step 6: Final answer
    x = 103,948.87

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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.