Home / 128,300.86-192,428.61-34,813.90

Finding the Fourth Proportional to 128,300.86, 192,428.61 and 34,813.90

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Solution

The fourth proportional to 128,300.86, 192,428.61 and 34,813.90 is: 52,214.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,300.86 : 192,428.61 = 34,813.90 : x
  2. Step 2: Convert to fraction form
    128,300.86/192,428.61 = 34,813.90/x
  3. Step 3: Cross multiply
    128,300.86x = 192,428.61 × 34,813.90
  4. Step 4: Simplify right side
    128,300.86x = 6,699,189,926.96
  5. Step 5: Solve for x
    x = 6,699,189,926.96/128,300.86
  6. Step 6: Final answer
    x = 52,214.69

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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.