Home / 165,002.58-247,085.21-138,278.30

Finding the Fourth Proportional to 165,002.58, 247,085.21 and 138,278.30

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Solution

The fourth proportional to 165,002.58, 247,085.21 and 138,278.30 is: 207,066.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,002.58 : 247,085.21 = 138,278.30 : x
  2. Step 2: Convert to fraction form
    165,002.58/247,085.21 = 138,278.30/x
  3. Step 3: Cross multiply
    165,002.58x = 247,085.21 × 138,278.30
  4. Step 4: Simplify right side
    165,002.58x = 34,166,521,904.21
  5. Step 5: Solve for x
    x = 34,166,521,904.21/165,002.58
  6. Step 6: Final answer
    x = 207,066.59

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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.