Home / 128,899.36-193,346.11-75,927.39

Finding the Fourth Proportional to 128,899.36, 193,346.11 and 75,927.39

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Solution

The fourth proportional to 128,899.36, 193,346.11 and 75,927.39 is: 113,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,899.36 : 193,346.11 = 75,927.39 : x
  2. Step 2: Convert to fraction form
    128,899.36/193,346.11 = 75,927.39/x
  3. Step 3: Cross multiply
    128,899.36x = 193,346.11 × 75,927.39
  4. Step 4: Simplify right side
    128,899.36x = 14,680,265,498.95
  5. Step 5: Solve for x
    x = 14,680,265,498.95/128,899.36
  6. Step 6: Final answer
    x = 113,889.36

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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.