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Finding the Fourth Proportional to 154,073.68, 212,600.34 and 86,082.10

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Solution

The fourth proportional to 154,073.68, 212,600.34 and 86,082.10 is: 118,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,073.68 : 212,600.34 = 86,082.10 : x
  2. Step 2: Convert to fraction form
    154,073.68/212,600.34 = 86,082.10/x
  3. Step 3: Cross multiply
    154,073.68x = 212,600.34 × 86,082.10
  4. Step 4: Simplify right side
    154,073.68x = 18,301,083,727.91
  5. Step 5: Solve for x
    x = 18,301,083,727.91/154,073.68
  6. Step 6: Final answer
    x = 118,781.38

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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.