Home / 138,784.12-191,423.30-95,780.04

Finding the Fourth Proportional to 138,784.12, 191,423.30 and 95,780.04

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Solution

The fourth proportional to 138,784.12, 191,423.30 and 95,780.04 is: 132,108.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,784.12 : 191,423.30 = 95,780.04 : x
  2. Step 2: Convert to fraction form
    138,784.12/191,423.30 = 95,780.04/x
  3. Step 3: Cross multiply
    138,784.12x = 191,423.30 × 95,780.04
  4. Step 4: Simplify right side
    138,784.12x = 18,334,531,330.93
  5. Step 5: Solve for x
    x = 18,334,531,330.93/138,784.12
  6. Step 6: Final answer
    x = 132,108.28

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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.