Home / 129,048.60-193,572.90-121,272.60

Finding the Fourth Proportional to 129,048.60, 193,572.90 and 121,272.60

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Solution

The fourth proportional to 129,048.60, 193,572.90 and 121,272.60 is: 181,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,048.60 : 193,572.90 = 121,272.60 : x
  2. Step 2: Convert to fraction form
    129,048.60/193,572.90 = 121,272.60/x
  3. Step 3: Cross multiply
    129,048.60x = 193,572.90 × 121,272.60
  4. Step 4: Simplify right side
    129,048.60x = 23,475,088,872.54
  5. Step 5: Solve for x
    x = 23,475,088,872.54/129,048.60
  6. Step 6: Final answer
    x = 181,908.90

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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.