Home / 138,140.19-207,289.71-58,171.84

Finding the Fourth Proportional to 138,140.19, 207,289.71 and 58,171.84

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Solution

The fourth proportional to 138,140.19, 207,289.71 and 58,171.84 is: 87,291.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,140.19 : 207,289.71 = 58,171.84 : x
  2. Step 2: Convert to fraction form
    138,140.19/207,289.71 = 58,171.84/x
  3. Step 3: Cross multiply
    138,140.19x = 207,289.71 × 58,171.84
  4. Step 4: Simplify right side
    138,140.19x = 12,058,423,843.77
  5. Step 5: Solve for x
    x = 12,058,423,843.77/138,140.19
  6. Step 6: Final answer
    x = 87,291.21

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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.