Home / 142,114.64-196,118.24-78,452.48

Finding the Fourth Proportional to 142,114.64, 196,118.24 and 78,452.48

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Solution

The fourth proportional to 142,114.64, 196,118.24 and 78,452.48 is: 108,264.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,114.64 : 196,118.24 = 78,452.48 : x
  2. Step 2: Convert to fraction form
    142,114.64/196,118.24 = 78,452.48/x
  3. Step 3: Cross multiply
    142,114.64x = 196,118.24 × 78,452.48
  4. Step 4: Simplify right side
    142,114.64x = 15,385,962,301.24
  5. Step 5: Solve for x
    x = 15,385,962,301.24/142,114.64
  6. Step 6: Final answer
    x = 108,264.44

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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.