Home / 170,782.10-256,246.05-81,989.90

Finding the Fourth Proportional to 170,782.10, 256,246.05 and 81,989.90

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Solution

The fourth proportional to 170,782.10, 256,246.05 and 81,989.90 is: 123,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,782.10 : 256,246.05 = 81,989.90 : x
  2. Step 2: Convert to fraction form
    170,782.10/256,246.05 = 81,989.90/x
  3. Step 3: Cross multiply
    170,782.10x = 256,246.05 × 81,989.90
  4. Step 4: Simplify right side
    170,782.10x = 21,009,588,014.90
  5. Step 5: Solve for x
    x = 21,009,588,014.90/170,782.10
  6. Step 6: Final answer
    x = 123,019.85

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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.