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Finding the Fourth Proportional to 121,801.60, 168,076.92 and 74,048.32

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Solution

The fourth proportional to 121,801.60, 168,076.92 and 74,048.32 is: 102,181.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,801.60 : 168,076.92 = 74,048.32 : x
  2. Step 2: Convert to fraction form
    121,801.60/168,076.92 = 74,048.32/x
  3. Step 3: Cross multiply
    121,801.60x = 168,076.92 × 74,048.32
  4. Step 4: Simplify right side
    121,801.60x = 12,445,813,556.77
  5. Step 5: Solve for x
    x = 12,445,813,556.77/121,801.60
  6. Step 6: Final answer
    x = 102,181.04

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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.