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Finding the Fourth Proportional to 122,504.59, 169,026.77 and 71,488.21

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Solution

The fourth proportional to 122,504.59, 169,026.77 and 71,488.21 is: 98,636.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,504.59 : 169,026.77 = 71,488.21 : x
  2. Step 2: Convert to fraction form
    122,504.59/169,026.77 = 71,488.21/x
  3. Step 3: Cross multiply
    122,504.59x = 169,026.77 × 71,488.21
  4. Step 4: Simplify right side
    122,504.59x = 12,083,420,871.94
  5. Step 5: Solve for x
    x = 12,083,420,871.94/122,504.59
  6. Step 6: Final answer
    x = 98,636.47

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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.