Home / 138,073.14-190,542.03-76,820.22

Finding the Fourth Proportional to 138,073.14, 190,542.03 and 76,820.22

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Solution

The fourth proportional to 138,073.14, 190,542.03 and 76,820.22 is: 106,012.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,073.14 : 190,542.03 = 76,820.22 : x
  2. Step 2: Convert to fraction form
    138,073.14/190,542.03 = 76,820.22/x
  3. Step 3: Cross multiply
    138,073.14x = 190,542.03 × 76,820.22
  4. Step 4: Simplify right side
    138,073.14x = 14,637,480,663.85
  5. Step 5: Solve for x
    x = 14,637,480,663.85/138,073.14
  6. Step 6: Final answer
    x = 106,012.51

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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.