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Finding the Fourth Proportional to 159,883.40, 220,639.86 and 88,262.12

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Solution

The fourth proportional to 159,883.40, 220,639.86 and 88,262.12 is: 121,802.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,883.40 : 220,639.86 = 88,262.12 : x
  2. Step 2: Convert to fraction form
    159,883.40/220,639.86 = 88,262.12/x
  3. Step 3: Cross multiply
    159,883.40x = 220,639.86 × 88,262.12
  4. Step 4: Simplify right side
    159,883.40x = 19,474,141,800.10
  5. Step 5: Solve for x
    x = 19,474,141,800.10/159,883.40
  6. Step 6: Final answer
    x = 121,802.15

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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.