Home / 138,044.29-190,487.98-80,697.05

Finding the Fourth Proportional to 138,044.29, 190,487.98 and 80,697.05

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Solution

The fourth proportional to 138,044.29, 190,487.98 and 80,697.05 is: 111,354.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,044.29 : 190,487.98 = 80,697.05 : x
  2. Step 2: Convert to fraction form
    138,044.29/190,487.98 = 80,697.05/x
  3. Step 3: Cross multiply
    138,044.29x = 190,487.98 × 80,697.05
  4. Step 4: Simplify right side
    138,044.29x = 15,371,818,046.46
  5. Step 5: Solve for x
    x = 15,371,818,046.46/138,044.29
  6. Step 6: Final answer
    x = 111,354.25

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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.