Home / 102,179.57-153,134.37-78,396.14

Finding the Fourth Proportional to 102,179.57, 153,134.37 and 78,396.14

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Solution

The fourth proportional to 102,179.57, 153,134.37 and 78,396.14 is: 117,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,179.57 : 153,134.37 = 78,396.14 : x
  2. Step 2: Convert to fraction form
    102,179.57/153,134.37 = 78,396.14/x
  3. Step 3: Cross multiply
    102,179.57x = 153,134.37 × 78,396.14
  4. Step 4: Simplify right side
    102,179.57x = 12,005,142,743.66
  5. Step 5: Solve for x
    x = 12,005,142,743.66/102,179.57
  6. Step 6: Final answer
    x = 117,490.64

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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.