Home / 142,947.28-197,290.86-79,305.58

Finding the Fourth Proportional to 142,947.28, 197,290.86 and 79,305.58

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Solution

The fourth proportional to 142,947.28, 197,290.86 and 79,305.58 is: 109,454.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,947.28 : 197,290.86 = 79,305.58 : x
  2. Step 2: Convert to fraction form
    142,947.28/197,290.86 = 79,305.58/x
  3. Step 3: Cross multiply
    142,947.28x = 197,290.86 × 79,305.58
  4. Step 4: Simplify right side
    142,947.28x = 15,646,266,081.00
  5. Step 5: Solve for x
    x = 15,646,266,081.00/142,947.28
  6. Step 6: Final answer
    x = 109,454.80

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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.