Home / 135,155.37-186,506.91-74,722.50

Finding the Fourth Proportional to 135,155.37, 186,506.91 and 74,722.50

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Solution

The fourth proportional to 135,155.37, 186,506.91 and 74,722.50 is: 103,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,155.37 : 186,506.91 = 74,722.50 : x
  2. Step 2: Convert to fraction form
    135,155.37/186,506.91 = 74,722.50/x
  3. Step 3: Cross multiply
    135,155.37x = 186,506.91 × 74,722.50
  4. Step 4: Simplify right side
    135,155.37x = 13,936,262,582.48
  5. Step 5: Solve for x
    x = 13,936,262,582.48/135,155.37
  6. Step 6: Final answer
    x = 103,112.90

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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.