Home / 155,286.84-214,294.56-87,304.12

Finding the Fourth Proportional to 155,286.84, 214,294.56 and 87,304.12

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Solution

The fourth proportional to 155,286.84, 214,294.56 and 87,304.12 is: 120,478.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,286.84 : 214,294.56 = 87,304.12 : x
  2. Step 2: Convert to fraction form
    155,286.84/214,294.56 = 87,304.12/x
  3. Step 3: Cross multiply
    155,286.84x = 214,294.56 × 87,304.12
  4. Step 4: Simplify right side
    155,286.84x = 18,708,797,981.59
  5. Step 5: Solve for x
    x = 18,708,797,981.59/155,286.84
  6. Step 6: Final answer
    x = 120,478.97

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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.