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Finding the Fourth Proportional to 159,443.97, 220,030.05 and 87,830.67

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Solution

The fourth proportional to 159,443.97, 220,030.05 and 87,830.67 is: 121,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,443.97 : 220,030.05 = 87,830.67 : x
  2. Step 2: Convert to fraction form
    159,443.97/220,030.05 = 87,830.67/x
  3. Step 3: Cross multiply
    159,443.97x = 220,030.05 × 87,830.67
  4. Step 4: Simplify right side
    159,443.97x = 19,325,386,711.63
  5. Step 5: Solve for x
    x = 19,325,386,711.63/159,443.97
  6. Step 6: Final answer
    x = 121,204.88

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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.