Home / 128,145.96-192,237.33-39,406.95

Finding the Fourth Proportional to 128,145.96, 192,237.33 and 39,406.95

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Solution

The fourth proportional to 128,145.96, 192,237.33 and 39,406.95 is: 59,116.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,145.96 : 192,237.33 = 39,406.95 : x
  2. Step 2: Convert to fraction form
    128,145.96/192,237.33 = 39,406.95/x
  3. Step 3: Cross multiply
    128,145.96x = 192,237.33 × 39,406.95
  4. Step 4: Simplify right side
    128,145.96x = 7,575,486,851.44
  5. Step 5: Solve for x
    x = 7,575,486,851.44/128,145.96
  6. Step 6: Final answer
    x = 59,116.08

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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.