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Finding the Fourth Proportional to 154,660.48, 213,446.48 and 86,688.96

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Solution

The fourth proportional to 154,660.48, 213,446.48 and 86,688.96 is: 119,639.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,660.48 : 213,446.48 = 86,688.96 : x
  2. Step 2: Convert to fraction form
    154,660.48/213,446.48 = 86,688.96/x
  3. Step 3: Cross multiply
    154,660.48x = 213,446.48 × 86,688.96
  4. Step 4: Simplify right side
    154,660.48x = 18,503,453,366.86
  5. Step 5: Solve for x
    x = 18,503,453,366.86/154,660.48
  6. Step 6: Final answer
    x = 119,639.18

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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.