Home / 170,812-256,373.48-90,917.04

Finding the Fourth Proportional to 170,812, 256,373.48 and 90,917.04

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Solution

The fourth proportional to 170,812, 256,373.48 and 90,917.04 is: 136,458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,812 : 256,373.48 = 90,917.04 : x
  2. Step 2: Convert to fraction form
    170,812/256,373.48 = 90,917.04/x
  3. Step 3: Cross multiply
    170,812x = 256,373.48 × 90,917.04
  4. Step 4: Simplify right side
    170,812x = 23,308,717,936.10
  5. Step 5: Solve for x
    x = 23,308,717,936.10/170,812
  6. Step 6: Final answer
    x = 136,458.32

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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.