Home / 136,827.66-188,822.76-76,394.78

Finding the Fourth Proportional to 136,827.66, 188,822.76 and 76,394.78

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Solution

The fourth proportional to 136,827.66, 188,822.76 and 76,394.78 is: 105,425.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,827.66 : 188,822.76 = 76,394.78 : x
  2. Step 2: Convert to fraction form
    136,827.66/188,822.76 = 76,394.78/x
  3. Step 3: Cross multiply
    136,827.66x = 188,822.76 × 76,394.78
  4. Step 4: Simplify right side
    136,827.66x = 14,425,073,209.19
  5. Step 5: Solve for x
    x = 14,425,073,209.19/136,827.66
  6. Step 6: Final answer
    x = 105,425.13

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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.