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Finding the Fourth Proportional to 159,643.34, 220,290.96 and 88,019.12

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Solution

The fourth proportional to 159,643.34, 220,290.96 and 88,019.12 is: 121,457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,643.34 : 220,290.96 = 88,019.12 : x
  2. Step 2: Convert to fraction form
    159,643.34/220,290.96 = 88,019.12/x
  3. Step 3: Cross multiply
    159,643.34x = 220,290.96 × 88,019.12
  4. Step 4: Simplify right side
    159,643.34x = 19,389,816,443.16
  5. Step 5: Solve for x
    x = 19,389,816,443.16/159,643.34
  6. Step 6: Final answer
    x = 121,457.10

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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.