Home / 142,757.76-197,002.80-79,095.36

Finding the Fourth Proportional to 142,757.76, 197,002.80 and 79,095.36

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Solution

The fourth proportional to 142,757.76, 197,002.80 and 79,095.36 is: 109,149.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,757.76 : 197,002.80 = 79,095.36 : x
  2. Step 2: Convert to fraction form
    142,757.76/197,002.80 = 79,095.36/x
  3. Step 3: Cross multiply
    142,757.76x = 197,002.80 × 79,095.36
  4. Step 4: Simplify right side
    142,757.76x = 15,582,007,387.01
  5. Step 5: Solve for x
    x = 15,582,007,387.01/142,757.76
  6. Step 6: Final answer
    x = 109,149.99

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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.