Home / 136,774.91-188,780.87-80,204.51

Finding the Fourth Proportional to 136,774.91, 188,780.87 and 80,204.51

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Solution

The fourth proportional to 136,774.91, 188,780.87 and 80,204.51 is: 110,700.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,774.91 : 188,780.87 = 80,204.51 : x
  2. Step 2: Convert to fraction form
    136,774.91/188,780.87 = 80,204.51/x
  3. Step 3: Cross multiply
    136,774.91x = 188,780.87 × 80,204.51
  4. Step 4: Simplify right side
    136,774.91x = 15,141,076,689.11
  5. Step 5: Solve for x
    x = 15,141,076,689.11/136,774.91
  6. Step 6: Final answer
    x = 110,700.69

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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.