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Finding the Fourth Proportional to 159,491.34, 220,074.03 and 90,570.06

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Solution

The fourth proportional to 159,491.34, 220,074.03 and 90,570.06 is: 124,973.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,491.34 : 220,074.03 = 90,570.06 : x
  2. Step 2: Convert to fraction form
    159,491.34/220,074.03 = 90,570.06/x
  3. Step 3: Cross multiply
    159,491.34x = 220,074.03 × 90,570.06
  4. Step 4: Simplify right side
    159,491.34x = 19,932,118,101.54
  5. Step 5: Solve for x
    x = 19,932,118,101.54/159,491.34
  6. Step 6: Final answer
    x = 124,973.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.