Home / 142,947.90-197,254.08-79,284.42

Finding the Fourth Proportional to 142,947.90, 197,254.08 and 79,284.42

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Solution

The fourth proportional to 142,947.90, 197,254.08 and 79,284.42 is: 109,404.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,947.90 : 197,254.08 = 79,284.42 : x
  2. Step 2: Convert to fraction form
    142,947.90/197,254.08 = 79,284.42/x
  3. Step 3: Cross multiply
    142,947.90x = 197,254.08 × 79,284.42
  4. Step 4: Simplify right side
    142,947.90x = 15,639,175,325.43
  5. Step 5: Solve for x
    x = 15,639,175,325.43/142,947.90
  6. Step 6: Final answer
    x = 109,404.72

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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.