Home / 170,918.60-256,453.05-90,937.76

Finding the Fourth Proportional to 170,918.60, 256,453.05 and 90,937.76

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Solution

The fourth proportional to 170,918.60, 256,453.05 and 90,937.76 is: 136,446.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,918.60 : 256,453.05 = 90,937.76 : x
  2. Step 2: Convert to fraction form
    170,918.60/256,453.05 = 90,937.76/x
  3. Step 3: Cross multiply
    170,918.60x = 256,453.05 × 90,937.76
  4. Step 4: Simplify right side
    170,918.60x = 23,321,264,970.92
  5. Step 5: Solve for x
    x = 23,321,264,970.92/170,918.60
  6. Step 6: Final answer
    x = 136,446.62

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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.