Home / 142,104.48-196,102.97-78,440.91

Finding the Fourth Proportional to 142,104.48, 196,102.97 and 78,440.91

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Solution

The fourth proportional to 142,104.48, 196,102.97 and 78,440.91 is: 108,247.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,104.48 : 196,102.97 = 78,440.91 : x
  2. Step 2: Convert to fraction form
    142,104.48/196,102.97 = 78,440.91/x
  3. Step 3: Cross multiply
    142,104.48x = 196,102.97 × 78,440.91
  4. Step 4: Simplify right side
    142,104.48x = 15,382,495,028.30
  5. Step 5: Solve for x
    x = 15,382,495,028.30/142,104.48
  6. Step 6: Final answer
    x = 108,247.79

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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.