Home / 100,991.07-151,512.53-30,870.18

Finding the Fourth Proportional to 100,991.07, 151,512.53 and 30,870.18

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Solution

The fourth proportional to 100,991.07, 151,512.53 and 30,870.18 is: 46,313.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,991.07 : 151,512.53 = 30,870.18 : x
  2. Step 2: Convert to fraction form
    100,991.07/151,512.53 = 30,870.18/x
  3. Step 3: Cross multiply
    100,991.07x = 151,512.53 × 30,870.18
  4. Step 4: Simplify right side
    100,991.07x = 4,677,218,919.00
  5. Step 5: Solve for x
    x = 4,677,218,919.00/100,991.07
  6. Step 6: Final answer
    x = 46,313.19

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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.