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Finding the Fourth Proportional to 100,130.88, 150,220.89 and 30,010.13

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Solution

The fourth proportional to 100,130.88, 150,220.89 and 30,010.13 is: 45,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,130.88 : 150,220.89 = 30,010.13 : x
  2. Step 2: Convert to fraction form
    100,130.88/150,220.89 = 30,010.13/x
  3. Step 3: Cross multiply
    100,130.88x = 150,220.89 × 30,010.13
  4. Step 4: Simplify right side
    100,130.88x = 4,508,147,686.51
  5. Step 5: Solve for x
    x = 4,508,147,686.51/100,130.88
  6. Step 6: Final answer
    x = 45,022.55

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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.