Home / 170,749.30-256,121.55-77,254.90

Finding the Fourth Proportional to 170,749.30, 256,121.55 and 77,254.90

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Solution

The fourth proportional to 170,749.30, 256,121.55 and 77,254.90 is: 115,881.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,749.30 : 256,121.55 = 77,254.90 : x
  2. Step 2: Convert to fraction form
    170,749.30/256,121.55 = 77,254.90/x
  3. Step 3: Cross multiply
    170,749.30x = 256,121.55 × 77,254.90
  4. Step 4: Simplify right side
    170,749.30x = 19,786,644,733.10
  5. Step 5: Solve for x
    x = 19,786,644,733.10/170,749.30
  6. Step 6: Final answer
    x = 115,881.26

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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.