Home / 142,630.19-196,832.66-78,102.15

Finding the Fourth Proportional to 142,630.19, 196,832.66 and 78,102.15

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Solution

The fourth proportional to 142,630.19, 196,832.66 and 78,102.15 is: 107,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,630.19 : 196,832.66 = 78,102.15 : x
  2. Step 2: Convert to fraction form
    142,630.19/196,832.66 = 78,102.15/x
  3. Step 3: Cross multiply
    142,630.19x = 196,832.66 × 78,102.15
  4. Step 4: Simplify right side
    142,630.19x = 15,373,053,936.22
  5. Step 5: Solve for x
    x = 15,373,053,936.22/142,630.19
  6. Step 6: Final answer
    x = 107,782.61

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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.