Home / 142,630.83-196,833.60-78,102.81

Finding the Fourth Proportional to 142,630.83, 196,833.60 and 78,102.81

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Solution

The fourth proportional to 142,630.83, 196,833.60 and 78,102.81 is: 107,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,630.83 : 196,833.60 = 78,102.81 : x
  2. Step 2: Convert to fraction form
    142,630.83/196,833.60 = 78,102.81/x
  3. Step 3: Cross multiply
    142,630.83x = 196,833.60 × 78,102.81
  4. Step 4: Simplify right side
    142,630.83x = 15,373,257,262.42
  5. Step 5: Solve for x
    x = 15,373,257,262.42/142,630.83
  6. Step 6: Final answer
    x = 107,783.55

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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.