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Finding the Fourth Proportional to 89,872.80, 134,809.20 and 60,304.80

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Solution

The fourth proportional to 89,872.80, 134,809.20 and 60,304.80 is: 90,457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,872.80 : 134,809.20 = 60,304.80 : x
  2. Step 2: Convert to fraction form
    89,872.80/134,809.20 = 60,304.80/x
  3. Step 3: Cross multiply
    89,872.80x = 134,809.20 × 60,304.80
  4. Step 4: Simplify right side
    89,872.80x = 8,129,641,844.16
  5. Step 5: Solve for x
    x = 8,129,641,844.16/89,872.80
  6. Step 6: Final answer
    x = 90,457.20

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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.