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Finding the Fourth Proportional to 102,389.80, 153,584.70 and 101,077.60

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Solution

The fourth proportional to 102,389.80, 153,584.70 and 101,077.60 is: 151,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,389.80 : 153,584.70 = 101,077.60 : x
  2. Step 2: Convert to fraction form
    102,389.80/153,584.70 = 101,077.60/x
  3. Step 3: Cross multiply
    102,389.80x = 153,584.70 × 101,077.60
  4. Step 4: Simplify right side
    102,389.80x = 15,523,972,872.72
  5. Step 5: Solve for x
    x = 15,523,972,872.72/102,389.80
  6. Step 6: Final answer
    x = 151,616.40

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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.