Home / 129,407.20-178,585.88-70,474.56

Finding the Fourth Proportional to 129,407.20, 178,585.88 and 70,474.56

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Solution

The fourth proportional to 129,407.20, 178,585.88 and 70,474.56 is: 97,257.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,407.20 : 178,585.88 = 70,474.56 : x
  2. Step 2: Convert to fraction form
    129,407.20/178,585.88 = 70,474.56/x
  3. Step 3: Cross multiply
    129,407.20x = 178,585.88 × 70,474.56
  4. Step 4: Simplify right side
    129,407.20x = 12,585,760,293.14
  5. Step 5: Solve for x
    x = 12,585,760,293.14/129,407.20
  6. Step 6: Final answer
    x = 97,257.03

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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.