Home / 170,620.64-256,088.04-86,439.37

Finding the Fourth Proportional to 170,620.64, 256,088.04 and 86,439.37

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Solution

The fourth proportional to 170,620.64, 256,088.04 and 86,439.37 is: 129,738.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,620.64 : 256,088.04 = 86,439.37 : x
  2. Step 2: Convert to fraction form
    170,620.64/256,088.04 = 86,439.37/x
  3. Step 3: Cross multiply
    170,620.64x = 256,088.04 × 86,439.37
  4. Step 4: Simplify right side
    170,620.64x = 22,136,088,842.13
  5. Step 5: Solve for x
    x = 22,136,088,842.13/170,620.64
  6. Step 6: Final answer
    x = 129,738.63

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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.