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Finding the Fourth Proportional to 154,246.86, 212,849.28 and 85,333.32

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Solution

The fourth proportional to 154,246.86, 212,849.28 and 85,333.32 is: 117,753.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,246.86 : 212,849.28 = 85,333.32 : x
  2. Step 2: Convert to fraction form
    154,246.86/212,849.28 = 85,333.32/x
  3. Step 3: Cross multiply
    154,246.86x = 212,849.28 × 85,333.32
  4. Step 4: Simplify right side
    154,246.86x = 18,163,135,722.01
  5. Step 5: Solve for x
    x = 18,163,135,722.01/154,246.86
  6. Step 6: Final answer
    x = 117,753.68

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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.