Home / 128,899.86-193,346.87-75,927.89

Finding the Fourth Proportional to 128,899.86, 193,346.87 and 75,927.89

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Solution

The fourth proportional to 128,899.86, 193,346.87 and 75,927.89 is: 113,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,899.86 : 193,346.87 = 75,927.89 : x
  2. Step 2: Convert to fraction form
    128,899.86/193,346.87 = 75,927.89/x
  3. Step 3: Cross multiply
    128,899.86x = 193,346.87 × 75,927.89
  4. Step 4: Simplify right side
    128,899.86x = 14,680,418,530.83
  5. Step 5: Solve for x
    x = 14,680,418,530.83/128,899.86
  6. Step 6: Final answer
    x = 113,890.10

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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.