Home / 141,821.66-195,721.18-78,159.47

Finding the Fourth Proportional to 141,821.66, 195,721.18 and 78,159.47

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Solution

The fourth proportional to 141,821.66, 195,721.18 and 78,159.47 is: 107,864.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,821.66 : 195,721.18 = 78,159.47 : x
  2. Step 2: Convert to fraction form
    141,821.66/195,721.18 = 78,159.47/x
  3. Step 3: Cross multiply
    141,821.66x = 195,721.18 × 78,159.47
  4. Step 4: Simplify right side
    141,821.66x = 15,297,462,522.57
  5. Step 5: Solve for x
    x = 15,297,462,522.57/141,821.66
  6. Step 6: Final answer
    x = 107,864.08

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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.