Home / 129,224.22-193,638.50-86,947.72

Finding the Fourth Proportional to 129,224.22, 193,638.50 and 86,947.72

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Solution

The fourth proportional to 129,224.22, 193,638.50 and 86,947.72 is: 130,288.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,224.22 : 193,638.50 = 86,947.72 : x
  2. Step 2: Convert to fraction form
    129,224.22/193,638.50 = 86,947.72/x
  3. Step 3: Cross multiply
    129,224.22x = 193,638.50 × 86,947.72
  4. Step 4: Simplify right side
    129,224.22x = 16,836,426,079.22
  5. Step 5: Solve for x
    x = 16,836,426,079.22/129,224.22
  6. Step 6: Final answer
    x = 130,288.47

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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.