Home / 138,826.80-208,118.70-94,309.20

Finding the Fourth Proportional to 138,826.80, 208,118.70 and 94,309.20

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Solution

The fourth proportional to 138,826.80, 208,118.70 and 94,309.20 is: 141,381.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,826.80 : 208,118.70 = 94,309.20 : x
  2. Step 2: Convert to fraction form
    138,826.80/208,118.70 = 94,309.20/x
  3. Step 3: Cross multiply
    138,826.80x = 208,118.70 × 94,309.20
  4. Step 4: Simplify right side
    138,826.80x = 19,627,508,102.04
  5. Step 5: Solve for x
    x = 19,627,508,102.04/138,826.80
  6. Step 6: Final answer
    x = 141,381.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.