Home / 138,981.36-191,794.24-75,319.15

Finding the Fourth Proportional to 138,981.36, 191,794.24 and 75,319.15

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Solution

The fourth proportional to 138,981.36, 191,794.24 and 75,319.15 is: 103,940.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,981.36 : 191,794.24 = 75,319.15 : x
  2. Step 2: Convert to fraction form
    138,981.36/191,794.24 = 75,319.15/x
  3. Step 3: Cross multiply
    138,981.36x = 191,794.24 × 75,319.15
  4. Step 4: Simplify right side
    138,981.36x = 14,445,779,131.70
  5. Step 5: Solve for x
    x = 14,445,779,131.70/138,981.36
  6. Step 6: Final answer
    x = 103,940.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.