Home / 138,975.20-191,785.75-75,313.01

Finding the Fourth Proportional to 138,975.20, 191,785.75 and 75,313.01

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Solution

The fourth proportional to 138,975.20, 191,785.75 and 75,313.01 is: 103,931.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,975.20 : 191,785.75 = 75,313.01 : x
  2. Step 2: Convert to fraction form
    138,975.20/191,785.75 = 75,313.01/x
  3. Step 3: Cross multiply
    138,975.20x = 191,785.75 × 75,313.01
  4. Step 4: Simplify right side
    138,975.20x = 14,443,962,107.61
  5. Step 5: Solve for x
    x = 14,443,962,107.61/138,975.20
  6. Step 6: Final answer
    x = 103,931.94

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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.