Home / 128,293.88-192,407.10-38,315.24

Finding the Fourth Proportional to 128,293.88, 192,407.10 and 38,315.24

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Solution

The fourth proportional to 128,293.88, 192,407.10 and 38,315.24 is: 57,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,293.88 : 192,407.10 = 38,315.24 : x
  2. Step 2: Convert to fraction form
    128,293.88/192,407.10 = 38,315.24/x
  3. Step 3: Cross multiply
    128,293.88x = 192,407.10 × 38,315.24
  4. Step 4: Simplify right side
    128,293.88x = 7,372,124,214.20
  5. Step 5: Solve for x
    x = 7,372,124,214.20/128,293.88
  6. Step 6: Final answer
    x = 57,462.79

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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.