Home / 136,016.32-187,702.56-79,428.16

Finding the Fourth Proportional to 136,016.32, 187,702.56 and 79,428.16

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Solution

The fourth proportional to 136,016.32, 187,702.56 and 79,428.16 is: 109,610.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,016.32 : 187,702.56 = 79,428.16 : x
  2. Step 2: Convert to fraction form
    136,016.32/187,702.56 = 79,428.16/x
  3. Step 3: Cross multiply
    136,016.32x = 187,702.56 × 79,428.16
  4. Step 4: Simplify right side
    136,016.32x = 14,908,868,968.09
  5. Step 5: Solve for x
    x = 14,908,868,968.09/136,016.32
  6. Step 6: Final answer
    x = 109,610.88

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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.