Home / 138,788.52-191,527.72-75,126.16

Finding the Fourth Proportional to 138,788.52, 191,527.72 and 75,126.16

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Solution

The fourth proportional to 138,788.52, 191,527.72 and 75,126.16 is: 103,673.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,788.52 : 191,527.72 = 75,126.16 : x
  2. Step 2: Convert to fraction form
    138,788.52/191,527.72 = 75,126.16/x
  3. Step 3: Cross multiply
    138,788.52x = 191,527.72 × 75,126.16
  4. Step 4: Simplify right side
    138,788.52x = 14,388,742,137.16
  5. Step 5: Solve for x
    x = 14,388,742,137.16/138,788.52
  6. Step 6: Final answer
    x = 103,673.86

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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.