Home / 106,399.28-146,646.06-77,671.68

Finding the Fourth Proportional to 106,399.28, 146,646.06 and 77,671.68

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Solution

The fourth proportional to 106,399.28, 146,646.06 and 77,671.68 is: 107,051.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,399.28 : 146,646.06 = 77,671.68 : x
  2. Step 2: Convert to fraction form
    106,399.28/146,646.06 = 77,671.68/x
  3. Step 3: Cross multiply
    106,399.28x = 146,646.06 × 77,671.68
  4. Step 4: Simplify right side
    106,399.28x = 11,390,245,004.39
  5. Step 5: Solve for x
    x = 11,390,245,004.39/106,399.28
  6. Step 6: Final answer
    x = 107,051.90

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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.