Home / 122,659.20-169,267.68-68,209.20

Finding the Fourth Proportional to 122,659.20, 169,267.68 and 68,209.20

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Solution

The fourth proportional to 122,659.20, 169,267.68 and 68,209.20 is: 94,127.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,659.20 : 169,267.68 = 68,209.20 : x
  2. Step 2: Convert to fraction form
    122,659.20/169,267.68 = 68,209.20/x
  3. Step 3: Cross multiply
    122,659.20x = 169,267.68 × 68,209.20
  4. Step 4: Simplify right side
    122,659.20x = 11,545,613,038.66
  5. Step 5: Solve for x
    x = 11,545,613,038.66/122,659.20
  6. Step 6: Final answer
    x = 94,127.57

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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.