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Finding the Fourth Proportional to 154,325.74, 212,960.82 and 85,411.44

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Solution

The fourth proportional to 154,325.74, 212,960.82 and 85,411.44 is: 117,862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,325.74 : 212,960.82 = 85,411.44 : x
  2. Step 2: Convert to fraction form
    154,325.74/212,960.82 = 85,411.44/x
  3. Step 3: Cross multiply
    154,325.74x = 212,960.82 × 85,411.44
  4. Step 4: Simplify right side
    154,325.74x = 18,189,290,832.18
  5. Step 5: Solve for x
    x = 18,189,290,832.18/154,325.74
  6. Step 6: Final answer
    x = 117,862.98

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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.