Home / 100,871.32-151,287.50-30,757.72

Finding the Fourth Proportional to 100,871.32, 151,287.50 and 30,757.72

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Solution

The fourth proportional to 100,871.32, 151,287.50 and 30,757.72 is: 46,130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,871.32 : 151,287.50 = 30,757.72 : x
  2. Step 2: Convert to fraction form
    100,871.32/151,287.50 = 30,757.72/x
  3. Step 3: Cross multiply
    100,871.32x = 151,287.50 × 30,757.72
  4. Step 4: Simplify right side
    100,871.32x = 4,653,258,564.50
  5. Step 5: Solve for x
    x = 4,653,258,564.50/100,871.32
  6. Step 6: Final answer
    x = 46,130.64

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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.