Home / 101,121.36-151,701.56-38,787

Finding the Fourth Proportional to 101,121.36, 151,701.56 and 38,787

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Solution

The fourth proportional to 101,121.36, 151,701.56 and 38,787 is: 58,187.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,121.36 : 151,701.56 = 38,787 : x
  2. Step 2: Convert to fraction form
    101,121.36/151,701.56 = 38,787/x
  3. Step 3: Cross multiply
    101,121.36x = 151,701.56 × 38,787
  4. Step 4: Simplify right side
    101,121.36x = 5,884,048,213.79
  5. Step 5: Solve for x
    x = 5,884,048,213.79/101,121.36
  6. Step 6: Final answer
    x = 58,187.99

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1.5x scale

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.