Home / 90,304.50-135,154.53-89,109.66

Finding the Fourth Proportional to 90,304.50, 135,154.53 and 89,109.66

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Solution

The fourth proportional to 90,304.50, 135,154.53 and 89,109.66 is: 133,366.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,304.50 : 135,154.53 = 89,109.66 : x
  2. Step 2: Convert to fraction form
    90,304.50/135,154.53 = 89,109.66/x
  3. Step 3: Cross multiply
    90,304.50x = 135,154.53 × 89,109.66
  4. Step 4: Simplify right side
    90,304.50x = 12,043,574,215.76
  5. Step 5: Solve for x
    x = 12,043,574,215.76/90,304.50
  6. Step 6: Final answer
    x = 133,366.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.