Home / 141,721.32-195,573.08-78,065.04

Finding the Fourth Proportional to 141,721.32, 195,573.08 and 78,065.04

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Solution

The fourth proportional to 141,721.32, 195,573.08 and 78,065.04 is: 107,728.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,721.32 : 195,573.08 = 78,065.04 : x
  2. Step 2: Convert to fraction form
    141,721.32/195,573.08 = 78,065.04/x
  3. Step 3: Cross multiply
    141,721.32x = 195,573.08 × 78,065.04
  4. Step 4: Simplify right side
    141,721.32x = 15,267,420,313.12
  5. Step 5: Solve for x
    x = 15,267,420,313.12/141,721.32
  6. Step 6: Final answer
    x = 107,728.47

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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.