Home / 141,427.52-195,162.72-77,763.68

Finding the Fourth Proportional to 141,427.52, 195,162.72 and 77,763.68

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Solution

The fourth proportional to 141,427.52, 195,162.72 and 77,763.68 is: 107,309.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,427.52 : 195,162.72 = 77,763.68 : x
  2. Step 2: Convert to fraction form
    141,427.52/195,162.72 = 77,763.68/x
  3. Step 3: Cross multiply
    141,427.52x = 195,162.72 × 77,763.68
  4. Step 4: Simplify right side
    141,427.52x = 15,176,571,306.01
  5. Step 5: Solve for x
    x = 15,176,571,306.01/141,427.52
  6. Step 6: Final answer
    x = 107,309.89

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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.