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Finding the Fourth Proportional to 159,597.40, 220,235.58 and 87,977.32

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Solution

The fourth proportional to 159,597.40, 220,235.58 and 87,977.32 is: 121,403.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,597.40 : 220,235.58 = 87,977.32 : x
  2. Step 2: Convert to fraction form
    159,597.40/220,235.58 = 87,977.32/x
  3. Step 3: Cross multiply
    159,597.40x = 220,235.58 × 87,977.32
  4. Step 4: Simplify right side
    159,597.40x = 19,375,736,097.05
  5. Step 5: Solve for x
    x = 19,375,736,097.05/159,597.40
  6. Step 6: Final answer
    x = 121,403.83

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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.