Home / 131,029.10-196,090.05-78,476.30

Finding the Fourth Proportional to 131,029.10, 196,090.05 and 78,476.30

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Solution

The fourth proportional to 131,029.10, 196,090.05 and 78,476.30 is: 117,442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,029.10 : 196,090.05 = 78,476.30 : x
  2. Step 2: Convert to fraction form
    131,029.10/196,090.05 = 78,476.30/x
  3. Step 3: Cross multiply
    131,029.10x = 196,090.05 × 78,476.30
  4. Step 4: Simplify right side
    131,029.10x = 15,388,421,590.82
  5. Step 5: Solve for x
    x = 15,388,421,590.82/131,029.10
  6. Step 6: Final answer
    x = 117,442.78

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1.5x scale

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.