Home / 135,155.16-186,508.62-74,721.96

Finding the Fourth Proportional to 135,155.16, 186,508.62 and 74,721.96

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Solution

The fourth proportional to 135,155.16, 186,508.62 and 74,721.96 is: 103,113.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,155.16 : 186,508.62 = 74,721.96 : x
  2. Step 2: Convert to fraction form
    135,155.16/186,508.62 = 74,721.96/x
  3. Step 3: Cross multiply
    135,155.16x = 186,508.62 × 74,721.96
  4. Step 4: Simplify right side
    135,155.16x = 13,936,289,643.30
  5. Step 5: Solve for x
    x = 13,936,289,643.30/135,155.16
  6. Step 6: Final answer
    x = 103,113.26

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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.