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Finding the Fourth Proportional to 153,887.80, 230,702.10 and 80,015.80

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Solution

The fourth proportional to 153,887.80, 230,702.10 and 80,015.80 is: 119,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,887.80 : 230,702.10 = 80,015.80 : x
  2. Step 2: Convert to fraction form
    153,887.80/230,702.10 = 80,015.80/x
  3. Step 3: Cross multiply
    153,887.80x = 230,702.10 × 80,015.80
  4. Step 4: Simplify right side
    153,887.80x = 18,459,813,093.18
  5. Step 5: Solve for x
    x = 18,459,813,093.18/153,887.80
  6. Step 6: Final answer
    x = 119,956.31

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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.