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Finding the Fourth Proportional to 136,474.90, 204,741.15 and 42,990.10

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Solution

The fourth proportional to 136,474.90, 204,741.15 and 42,990.10 is: 64,494.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,474.90 : 204,741.15 = 42,990.10 : x
  2. Step 2: Convert to fraction form
    136,474.90/204,741.15 = 42,990.10/x
  3. Step 3: Cross multiply
    136,474.90x = 204,741.15 × 42,990.10
  4. Step 4: Simplify right side
    136,474.90x = 8,801,842,512.62
  5. Step 5: Solve for x
    x = 8,801,842,512.62/136,474.90
  6. Step 6: Final answer
    x = 64,494.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.