Home / 100,805.31-151,215.26-34,218.45

Finding the Fourth Proportional to 100,805.31, 151,215.26 and 34,218.45

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Solution

The fourth proportional to 100,805.31, 151,215.26 and 34,218.45 is: 51,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,805.31 : 151,215.26 = 34,218.45 : x
  2. Step 2: Convert to fraction form
    100,805.31/151,215.26 = 34,218.45/x
  3. Step 3: Cross multiply
    100,805.31x = 151,215.26 × 34,218.45
  4. Step 4: Simplify right side
    100,805.31x = 5,174,351,642.45
  5. Step 5: Solve for x
    x = 5,174,351,642.45/100,805.31
  6. Step 6: Final answer
    x = 51,330.15

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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.