Home / 194,742,085.12-292,167,738.78-78,239,250.88

Finding the Fourth Proportional to 194,742,085.12, 292,167,738.78 and 78,239,250.88

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Solution

The fourth proportional to 194,742,085.12, 292,167,738.78 and 78,239,250.88 is: 117,380,816.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,742,085.12 : 292,167,738.78 = 78,239,250.88 : x
  2. Step 2: Convert to fraction form
    194,742,085.12/292,167,738.78 = 78,239,250.88/x
  3. Step 3: Cross multiply
    194,742,085.12x = 292,167,738.78 × 78,239,250.88
  4. Step 4: Simplify right side
    194,742,085.12x = 22,858,985,013,450,720
  5. Step 5: Solve for x
    x = 22,858,985,013,450,720/194,742,085.12
  6. Step 6: Final answer
    x = 117,380,816.78

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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.