Home / 128,173.86-192,263.76-39,428.10

Finding the Fourth Proportional to 128,173.86, 192,263.76 and 39,428.10

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Solution

The fourth proportional to 128,173.86, 192,263.76 and 39,428.10 is: 59,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,173.86 : 192,263.76 = 39,428.10 : x
  2. Step 2: Convert to fraction form
    128,173.86/192,263.76 = 39,428.10/x
  3. Step 3: Cross multiply
    128,173.86x = 192,263.76 × 39,428.10
  4. Step 4: Simplify right side
    128,173.86x = 7,580,594,755.66
  5. Step 5: Solve for x
    x = 7,580,594,755.66/128,173.86
  6. Step 6: Final answer
    x = 59,143.06

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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.