Home / 138,812.94-191,563.20-75,152.07

Finding the Fourth Proportional to 138,812.94, 191,563.20 and 75,152.07

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Solution

The fourth proportional to 138,812.94, 191,563.20 and 75,152.07 is: 103,710.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812.94 : 191,563.20 = 75,152.07 : x
  2. Step 2: Convert to fraction form
    138,812.94/191,563.20 = 75,152.07/x
  3. Step 3: Cross multiply
    138,812.94x = 191,563.20 × 75,152.07
  4. Step 4: Simplify right side
    138,812.94x = 14,396,371,015.82
  5. Step 5: Solve for x
    x = 14,396,371,015.82/138,812.94
  6. Step 6: Final answer
    x = 103,710.58

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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.