Home / 106,983.78-147,621.04-61,663.87

Finding the Fourth Proportional to 106,983.78, 147,621.04 and 61,663.87

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Solution

The fourth proportional to 106,983.78, 147,621.04 and 61,663.87 is: 85,086.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,983.78 : 147,621.04 = 61,663.87 : x
  2. Step 2: Convert to fraction form
    106,983.78/147,621.04 = 61,663.87/x
  3. Step 3: Cross multiply
    106,983.78x = 147,621.04 × 61,663.87
  4. Step 4: Simplify right side
    106,983.78x = 9,102,884,619.82
  5. Step 5: Solve for x
    x = 9,102,884,619.82/106,983.78
  6. Step 6: Final answer
    x = 85,086.59

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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.