Home / 130,939.68-196,458.12-68,566.44

Finding the Fourth Proportional to 130,939.68, 196,458.12 and 68,566.44

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Solution

The fourth proportional to 130,939.68, 196,458.12 and 68,566.44 is: 102,875.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,939.68 : 196,458.12 = 68,566.44 : x
  2. Step 2: Convert to fraction form
    130,939.68/196,458.12 = 68,566.44/x
  3. Step 3: Cross multiply
    130,939.68x = 196,458.12 × 68,566.44
  4. Step 4: Simplify right side
    130,939.68x = 13,470,433,897.49
  5. Step 5: Solve for x
    x = 13,470,433,897.49/130,939.68
  6. Step 6: Final answer
    x = 102,875.11

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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.