Home / 138,417.02-191,015.49-74,754.80

Finding the Fourth Proportional to 138,417.02, 191,015.49 and 74,754.80

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Solution

The fourth proportional to 138,417.02, 191,015.49 and 74,754.80 is: 103,161.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,417.02 : 191,015.49 = 74,754.80 : x
  2. Step 2: Convert to fraction form
    138,417.02/191,015.49 = 74,754.80/x
  3. Step 3: Cross multiply
    138,417.02x = 191,015.49 × 74,754.80
  4. Step 4: Simplify right side
    138,417.02x = 14,279,324,751.85
  5. Step 5: Solve for x
    x = 14,279,324,751.85/138,417.02
  6. Step 6: Final answer
    x = 103,161.63

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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.