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Finding the Fourth Proportional to 88,847.20, 133,343.70 and 85,931.20

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Solution

The fourth proportional to 88,847.20, 133,343.70 and 85,931.20 is: 128,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,847.20 : 133,343.70 = 85,931.20 : x
  2. Step 2: Convert to fraction form
    88,847.20/133,343.70 = 85,931.20/x
  3. Step 3: Cross multiply
    88,847.20x = 133,343.70 × 85,931.20
  4. Step 4: Simplify right side
    88,847.20x = 11,458,384,153.44
  5. Step 5: Solve for x
    x = 11,458,384,153.44/88,847.20
  6. Step 6: Final answer
    x = 128,967.31

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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.