Home / 101,425.20-151,476.06-86,270.81

Finding the Fourth Proportional to 101,425.20, 151,476.06 and 86,270.81

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Solution

The fourth proportional to 101,425.20, 151,476.06 and 86,270.81 is: 128,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,425.20 : 151,476.06 = 86,270.81 : x
  2. Step 2: Convert to fraction form
    101,425.20/151,476.06 = 86,270.81/x
  3. Step 3: Cross multiply
    101,425.20x = 151,476.06 × 86,270.81
  4. Step 4: Simplify right side
    101,425.20x = 13,067,962,391.81
  5. Step 5: Solve for x
    x = 13,067,962,391.81/101,425.20
  6. Step 6: Final answer
    x = 128,843.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.