Home / 87,128.76-130,518.14-73,744.36

Finding the Fourth Proportional to 87,128.76, 130,518.14 and 73,744.36

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Solution

The fourth proportional to 87,128.76, 130,518.14 and 73,744.36 is: 110,468.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,128.76 : 130,518.14 = 73,744.36 : x
  2. Step 2: Convert to fraction form
    87,128.76/130,518.14 = 73,744.36/x
  3. Step 3: Cross multiply
    87,128.76x = 130,518.14 × 73,744.36
  4. Step 4: Simplify right side
    87,128.76x = 9,624,976,702.69
  5. Step 5: Solve for x
    x = 9,624,976,702.69/87,128.76
  6. Step 6: Final answer
    x = 110,468.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.