Home / 136,569.52-188,466.72-76,144

Finding the Fourth Proportional to 136,569.52, 188,466.72 and 76,144

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Solution

The fourth proportional to 136,569.52, 188,466.72 and 76,144 is: 105,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,569.52 : 188,466.72 = 76,144 : x
  2. Step 2: Convert to fraction form
    136,569.52/188,466.72 = 76,144/x
  3. Step 3: Cross multiply
    136,569.52x = 188,466.72 × 76,144
  4. Step 4: Simplify right side
    136,569.52x = 14,350,609,927.68
  5. Step 5: Solve for x
    x = 14,350,609,927.68/136,569.52
  6. Step 6: Final answer
    x = 105,079.16

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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.