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Finding the Fourth Proportional to 151,241.68, 226,913.04 and 66,990.40

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Solution

The fourth proportional to 151,241.68, 226,913.04 and 66,990.40 is: 100,507.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,241.68 : 226,913.04 = 66,990.40 : x
  2. Step 2: Convert to fraction form
    151,241.68/226,913.04 = 66,990.40/x
  3. Step 3: Cross multiply
    151,241.68x = 226,913.04 × 66,990.40
  4. Step 4: Simplify right side
    151,241.68x = 15,200,995,314.82
  5. Step 5: Solve for x
    x = 15,200,995,314.82/151,241.68
  6. Step 6: Final answer
    x = 100,507.98

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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.