Home / 136,326.60-188,126.10-76,699.08

Finding the Fourth Proportional to 136,326.60, 188,126.10 and 76,699.08

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Solution

The fourth proportional to 136,326.60, 188,126.10 and 76,699.08 is: 105,842.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,326.60 : 188,126.10 = 76,699.08 : x
  2. Step 2: Convert to fraction form
    136,326.60/188,126.10 = 76,699.08/x
  3. Step 3: Cross multiply
    136,326.60x = 188,126.10 × 76,699.08
  4. Step 4: Simplify right side
    136,326.60x = 14,429,098,793.99
  5. Step 5: Solve for x
    x = 14,429,098,793.99/136,326.60
  6. Step 6: Final answer
    x = 105,842.14

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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.