Home / 141,388.21-195,116.36-77,730.10

Finding the Fourth Proportional to 141,388.21, 195,116.36 and 77,730.10

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Solution

The fourth proportional to 141,388.21, 195,116.36 and 77,730.10 is: 107,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,388.21 : 195,116.36 = 77,730.10 : x
  2. Step 2: Convert to fraction form
    141,388.21/195,116.36 = 77,730.10/x
  3. Step 3: Cross multiply
    141,388.21x = 195,116.36 × 77,730.10
  4. Step 4: Simplify right side
    141,388.21x = 15,166,414,174.44
  5. Step 5: Solve for x
    x = 15,166,414,174.44/141,388.21
  6. Step 6: Final answer
    x = 107,267.88

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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.