Home / 135,143.57-186,481.91-74,706.02

Finding the Fourth Proportional to 135,143.57, 186,481.91 and 74,706.02

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Solution

The fourth proportional to 135,143.57, 186,481.91 and 74,706.02 is: 103,085.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,143.57 : 186,481.91 = 74,706.02 : x
  2. Step 2: Convert to fraction form
    135,143.57/186,481.91 = 74,706.02/x
  3. Step 3: Cross multiply
    135,143.57x = 186,481.91 × 74,706.02
  4. Step 4: Simplify right side
    135,143.57x = 13,931,319,992.16
  5. Step 5: Solve for x
    x = 13,931,319,992.16/135,143.57
  6. Step 6: Final answer
    x = 103,085.34

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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.