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Finding the Fourth Proportional to 122,777.48, 169,435.30 and 71,794.76

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Solution

The fourth proportional to 122,777.48, 169,435.30 and 71,794.76 is: 99,078.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,777.48 : 169,435.30 = 71,794.76 : x
  2. Step 2: Convert to fraction form
    122,777.48/169,435.30 = 71,794.76/x
  3. Step 3: Cross multiply
    122,777.48x = 169,435.30 × 71,794.76
  4. Step 4: Simplify right side
    122,777.48x = 12,164,566,699.03
  5. Step 5: Solve for x
    x = 12,164,566,699.03/122,777.48
  6. Step 6: Final answer
    x = 99,078.16

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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.