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Finding the Fourth Proportional to 154,226.30, 212,845.05 and 86,248.85

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Solution

The fourth proportional to 154,226.30, 212,845.05 and 86,248.85 is: 119,030.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,226.30 : 212,845.05 = 86,248.85 : x
  2. Step 2: Convert to fraction form
    154,226.30/212,845.05 = 86,248.85/x
  3. Step 3: Cross multiply
    154,226.30x = 212,845.05 × 86,248.85
  4. Step 4: Simplify right side
    154,226.30x = 18,357,639,726.47
  5. Step 5: Solve for x
    x = 18,357,639,726.47/154,226.30
  6. Step 6: Final answer
    x = 119,030.54

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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.