Home / 138,812.52-191,561.73-75,150.57

Finding the Fourth Proportional to 138,812.52, 191,561.73 and 75,150.57

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Solution

The fourth proportional to 138,812.52, 191,561.73 and 75,150.57 is: 103,708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812.52 : 191,561.73 = 75,150.57 : x
  2. Step 2: Convert to fraction form
    138,812.52/191,561.73 = 75,150.57/x
  3. Step 3: Cross multiply
    138,812.52x = 191,561.73 × 75,150.57
  4. Step 4: Simplify right side
    138,812.52x = 14,395,973,199.69
  5. Step 5: Solve for x
    x = 14,395,973,199.69/138,812.52
  6. Step 6: Final answer
    x = 103,708.03

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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.