Home / 122,138.18-168,633.09-76,267.88

Finding the Fourth Proportional to 122,138.18, 168,633.09 and 76,267.88

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Solution

The fourth proportional to 122,138.18, 168,633.09 and 76,267.88 is: 105,301.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,138.18 : 168,633.09 = 76,267.88 : x
  2. Step 2: Convert to fraction form
    122,138.18/168,633.09 = 76,267.88/x
  3. Step 3: Cross multiply
    122,138.18x = 168,633.09 × 76,267.88
  4. Step 4: Simplify right side
    122,138.18x = 12,861,288,061.36
  5. Step 5: Solve for x
    x = 12,861,288,061.36/122,138.18
  6. Step 6: Final answer
    x = 105,301.13

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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.