Home / 165,031.31-247,325.22-90,039.08

Finding the Fourth Proportional to 165,031.31, 247,325.22 and 90,039.08

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Solution

The fourth proportional to 165,031.31, 247,325.22 and 90,039.08 is: 134,937.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,031.31 : 247,325.22 = 90,039.08 : x
  2. Step 2: Convert to fraction form
    165,031.31/247,325.22 = 90,039.08/x
  3. Step 3: Cross multiply
    165,031.31x = 247,325.22 × 90,039.08
  4. Step 4: Simplify right side
    165,031.31x = 22,268,934,032.97
  5. Step 5: Solve for x
    x = 22,268,934,032.97/165,031.31
  6. Step 6: Final answer
    x = 134,937.64

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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.