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Finding the Fourth Proportional to 89,157.16, 133,734.39 and 21,689.70

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Solution

The fourth proportional to 89,157.16, 133,734.39 and 21,689.70 is: 32,534.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,157.16 : 133,734.39 = 21,689.70 : x
  2. Step 2: Convert to fraction form
    89,157.16/133,734.39 = 21,689.70/x
  3. Step 3: Cross multiply
    89,157.16x = 133,734.39 × 21,689.70
  4. Step 4: Simplify right side
    89,157.16x = 2,900,658,798.78
  5. Step 5: Solve for x
    x = 2,900,658,798.78/89,157.16
  6. Step 6: Final answer
    x = 32,534.22

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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.