Home / 142,757.48-196,988.90-79,079.08

Finding the Fourth Proportional to 142,757.48, 196,988.90 and 79,079.08

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Solution

The fourth proportional to 142,757.48, 196,988.90 and 79,079.08 is: 109,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,757.48 : 196,988.90 = 79,079.08 : x
  2. Step 2: Convert to fraction form
    142,757.48/196,988.90 = 79,079.08/x
  3. Step 3: Cross multiply
    142,757.48x = 196,988.90 × 79,079.08
  4. Step 4: Simplify right side
    142,757.48x = 15,577,700,982.21
  5. Step 5: Solve for x
    x = 15,577,700,982.21/142,757.48
  6. Step 6: Final answer
    x = 109,120.03

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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.