Home / 136,643.23-188,567.92-76,217.79

Finding the Fourth Proportional to 136,643.23, 188,567.92 and 76,217.79

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Solution

The fourth proportional to 136,643.23, 188,567.92 and 76,217.79 is: 105,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,643.23 : 188,567.92 = 76,217.79 : x
  2. Step 2: Convert to fraction form
    136,643.23/188,567.92 = 76,217.79/x
  3. Step 3: Cross multiply
    136,643.23x = 188,567.92 × 76,217.79
  4. Step 4: Simplify right side
    136,643.23x = 14,372,230,127.30
  5. Step 5: Solve for x
    x = 14,372,230,127.30/136,643.23
  6. Step 6: Final answer
    x = 105,180.70

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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.