Home / 142,853.20-197,124.15-79,185.58

Finding the Fourth Proportional to 142,853.20, 197,124.15 and 79,185.58

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Solution

The fourth proportional to 142,853.20, 197,124.15 and 79,185.58 is: 109,268.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,853.20 : 197,124.15 = 79,185.58 : x
  2. Step 2: Convert to fraction form
    142,853.20/197,124.15 = 79,185.58/x
  3. Step 3: Cross multiply
    142,853.20x = 197,124.15 × 79,185.58
  4. Step 4: Simplify right side
    142,853.20x = 15,609,390,149.76
  5. Step 5: Solve for x
    x = 15,609,390,149.76/142,853.20
  6. Step 6: Final answer
    x = 109,268.75

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1.5x scale

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.