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Finding the Fourth Proportional to 126,498.60, 189,920.70 and 64,212.84

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Solution

The fourth proportional to 126,498.60, 189,920.70 and 64,212.84 is: 96,406.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,498.60 : 189,920.70 = 64,212.84 : x
  2. Step 2: Convert to fraction form
    126,498.60/189,920.70 = 64,212.84/x
  3. Step 3: Cross multiply
    126,498.60x = 189,920.70 × 64,212.84
  4. Step 4: Simplify right side
    126,498.60x = 12,195,347,521.79
  5. Step 5: Solve for x
    x = 12,195,347,521.79/126,498.60
  6. Step 6: Final answer
    x = 96,406.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.