Home / 142,937.80-197,241.24-79,275.40

Finding the Fourth Proportional to 142,937.80, 197,241.24 and 79,275.40

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Solution

The fourth proportional to 142,937.80, 197,241.24 and 79,275.40 is: 109,392.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,937.80 : 197,241.24 = 79,275.40 : x
  2. Step 2: Convert to fraction form
    142,937.80/197,241.24 = 79,275.40/x
  3. Step 3: Cross multiply
    142,937.80x = 197,241.24 × 79,275.40
  4. Step 4: Simplify right side
    142,937.80x = 15,636,378,197.50
  5. Step 5: Solve for x
    x = 15,636,378,197.50/142,937.80
  6. Step 6: Final answer
    x = 109,392.88

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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.