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Finding the Fourth Proportional to 159,425.19, 220,007.03 and 87,805.40

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Solution

The fourth proportional to 159,425.19, 220,007.03 and 87,805.40 is: 121,171.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,425.19 : 220,007.03 = 87,805.40 : x
  2. Step 2: Convert to fraction form
    159,425.19/220,007.03 = 87,805.40/x
  3. Step 3: Cross multiply
    159,425.19x = 220,007.03 × 87,805.40
  4. Step 4: Simplify right side
    159,425.19x = 19,317,803,732.90
  5. Step 5: Solve for x
    x = 19,317,803,732.90/159,425.19
  6. Step 6: Final answer
    x = 121,171.59

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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.