Home / 142,134.26-196,145.57-78,472.18

Finding the Fourth Proportional to 142,134.26, 196,145.57 and 78,472.18

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Solution

The fourth proportional to 142,134.26, 196,145.57 and 78,472.18 is: 108,291.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,134.26 : 196,145.57 = 78,472.18 : x
  2. Step 2: Convert to fraction form
    142,134.26/196,145.57 = 78,472.18/x
  3. Step 3: Cross multiply
    142,134.26x = 196,145.57 × 78,472.18
  4. Step 4: Simplify right side
    142,134.26x = 15,391,970,475.24
  5. Step 5: Solve for x
    x = 15,391,970,475.24/142,134.26
  6. Step 6: Final answer
    x = 108,291.77

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1.5x scale

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.