Home / 129,708.47-194,621.82-66,572.93

Finding the Fourth Proportional to 129,708.47, 194,621.82 and 66,572.93

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Solution

The fourth proportional to 129,708.47, 194,621.82 and 66,572.93 is: 99,889.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,708.47 : 194,621.82 = 66,572.93 : x
  2. Step 2: Convert to fraction form
    129,708.47/194,621.82 = 66,572.93/x
  3. Step 3: Cross multiply
    129,708.47x = 194,621.82 × 66,572.93
  4. Step 4: Simplify right side
    129,708.47x = 12,956,544,799.33
  5. Step 5: Solve for x
    x = 12,956,544,799.33/129,708.47
  6. Step 6: Final answer
    x = 99,889.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.