Home / 138,415.23-191,012.97-74,753.04

Finding the Fourth Proportional to 138,415.23, 191,012.97 and 74,753.04

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Solution

The fourth proportional to 138,415.23, 191,012.97 and 74,753.04 is: 103,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,415.23 : 191,012.97 = 74,753.04 : x
  2. Step 2: Convert to fraction form
    138,415.23/191,012.97 = 74,753.04/x
  3. Step 3: Cross multiply
    138,415.23x = 191,012.97 × 74,753.04
  4. Step 4: Simplify right side
    138,415.23x = 14,278,800,186.93
  5. Step 5: Solve for x
    x = 14,278,800,186.93/138,415.23
  6. Step 6: Final answer
    x = 103,159.17

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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.