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Finding the Fourth Proportional to 160,486.70, 240,620.70 and 76,287.20

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Solution

The fourth proportional to 160,486.70, 240,620.70 and 76,287.20 is: 114,378.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,486.70 : 240,620.70 = 76,287.20 : x
  2. Step 2: Convert to fraction form
    160,486.70/240,620.70 = 76,287.20/x
  3. Step 3: Cross multiply
    160,486.70x = 240,620.70 × 76,287.20
  4. Step 4: Simplify right side
    160,486.70x = 18,356,279,465.04
  5. Step 5: Solve for x
    x = 18,356,279,465.04/160,486.70
  6. Step 6: Final answer
    x = 114,378.82

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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.