Home / 135,150.45-186,508.73-74,722.10

Finding the Fourth Proportional to 135,150.45, 186,508.73 and 74,722.10

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Solution

The fourth proportional to 135,150.45, 186,508.73 and 74,722.10 is: 103,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,150.45 : 186,508.73 = 74,722.10 : x
  2. Step 2: Convert to fraction form
    135,150.45/186,508.73 = 74,722.10/x
  3. Step 3: Cross multiply
    135,150.45x = 186,508.73 × 74,722.10
  4. Step 4: Simplify right side
    135,150.45x = 13,936,323,988.13
  5. Step 5: Solve for x
    x = 13,936,323,988.13/135,150.45
  6. Step 6: Final answer
    x = 103,117.11

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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.