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Finding the Fourth Proportional to 154,232.96, 212,832.63 and 85,318.29

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Solution

The fourth proportional to 154,232.96, 212,832.63 and 85,318.29 is: 117,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,232.96 : 212,832.63 = 85,318.29 : x
  2. Step 2: Convert to fraction form
    154,232.96/212,832.63 = 85,318.29/x
  3. Step 3: Cross multiply
    154,232.96x = 212,832.63 × 85,318.29
  4. Step 4: Simplify right side
    154,232.96x = 18,158,516,047.80
  5. Step 5: Solve for x
    x = 18,158,516,047.80/154,232.96
  6. Step 6: Final answer
    x = 117,734.35

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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.