Home / 141,921.28-195,848.64-78,264.96

Finding the Fourth Proportional to 141,921.28, 195,848.64 and 78,264.96

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Solution

The fourth proportional to 141,921.28, 195,848.64 and 78,264.96 is: 108,004.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,921.28 : 195,848.64 = 78,264.96 : x
  2. Step 2: Convert to fraction form
    141,921.28/195,848.64 = 78,264.96/x
  3. Step 3: Cross multiply
    141,921.28x = 195,848.64 × 78,264.96
  4. Step 4: Simplify right side
    141,921.28x = 15,328,085,975.65
  5. Step 5: Solve for x
    x = 15,328,085,975.65/141,921.28
  6. Step 6: Final answer
    x = 108,004.14

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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.