Home / 154,654.60-213,438.18-86,671.24

Finding the Fourth Proportional to 154,654.60, 213,438.18 and 86,671.24

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Solution

The fourth proportional to 154,654.60, 213,438.18 and 86,671.24 is: 119,614.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,654.60 : 213,438.18 = 86,671.24 : x
  2. Step 2: Convert to fraction form
    154,654.60/213,438.18 = 86,671.24/x
  3. Step 3: Cross multiply
    154,654.60x = 213,438.18 × 86,671.24
  4. Step 4: Simplify right side
    154,654.60x = 18,498,951,723.94
  5. Step 5: Solve for x
    x = 18,498,951,723.94/154,654.60
  6. Step 6: Final answer
    x = 119,614.62

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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.