Home / 138,420.09-191,044.17-132,109.29

Finding the Fourth Proportional to 138,420.09, 191,044.17 and 132,109.29

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Solution

The fourth proportional to 138,420.09, 191,044.17 and 132,109.29 is: 182,334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,420.09 : 191,044.17 = 132,109.29 : x
  2. Step 2: Convert to fraction form
    138,420.09/191,044.17 = 132,109.29/x
  3. Step 3: Cross multiply
    138,420.09x = 191,044.17 × 132,109.29
  4. Step 4: Simplify right side
    138,420.09x = 25,238,709,657.34
  5. Step 5: Solve for x
    x = 25,238,709,657.34/138,420.09
  6. Step 6: Final answer
    x = 182,334.15

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1.5x scale

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.