Home / 141,821.95-195,712.55-78,158.38

Finding the Fourth Proportional to 141,821.95, 195,712.55 and 78,158.38

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Solution

The fourth proportional to 141,821.95, 195,712.55 and 78,158.38 is: 107,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,821.95 : 195,712.55 = 78,158.38 : x
  2. Step 2: Convert to fraction form
    141,821.95/195,712.55 = 78,158.38/x
  3. Step 3: Cross multiply
    141,821.95x = 195,712.55 × 78,158.38
  4. Step 4: Simplify right side
    141,821.95x = 15,296,575,853.67
  5. Step 5: Solve for x
    x = 15,296,575,853.67/141,821.95
  6. Step 6: Final answer
    x = 107,857.60

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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.