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Finding the Fourth Proportional to 150,913.44, 208,278.72 and 87,266.88

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Solution

The fourth proportional to 150,913.44, 208,278.72 and 87,266.88 is: 120,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,913.44 : 208,278.72 = 87,266.88 : x
  2. Step 2: Convert to fraction form
    150,913.44/208,278.72 = 87,266.88/x
  3. Step 3: Cross multiply
    150,913.44x = 208,278.72 × 87,266.88
  4. Step 4: Simplify right side
    150,913.44x = 18,175,834,064.79
  5. Step 5: Solve for x
    x = 18,175,834,064.79/150,913.44
  6. Step 6: Final answer
    x = 120,438.80

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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.