Home / 136,431.23-188,279.82-79,070.76

Finding the Fourth Proportional to 136,431.23, 188,279.82 and 79,070.76

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Solution

The fourth proportional to 136,431.23, 188,279.82 and 79,070.76 is: 109,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,431.23 : 188,279.82 = 79,070.76 : x
  2. Step 2: Convert to fraction form
    136,431.23/188,279.82 = 79,070.76/x
  3. Step 3: Cross multiply
    136,431.23x = 188,279.82 × 79,070.76
  4. Step 4: Simplify right side
    136,431.23x = 14,887,428,460.06
  5. Step 5: Solve for x
    x = 14,887,428,460.06/136,431.23
  6. Step 6: Final answer
    x = 109,120.39

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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.