Home / 147,086-220,350.36-86,934.32

Finding the Fourth Proportional to 147,086, 220,350.36 and 86,934.32

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Solution

The fourth proportional to 147,086, 220,350.36 and 86,934.32 is: 130,236.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,086 : 220,350.36 = 86,934.32 : x
  2. Step 2: Convert to fraction form
    147,086/220,350.36 = 86,934.32/x
  3. Step 3: Cross multiply
    147,086x = 220,350.36 × 86,934.32
  4. Step 4: Simplify right side
    147,086x = 19,156,008,708.36
  5. Step 5: Solve for x
    x = 19,156,008,708.36/147,086
  6. Step 6: Final answer
    x = 130,236.79

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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.