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Finding the Fourth Proportional to 161,370.87, 241,869.21 and 142,687.40

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Solution

The fourth proportional to 161,370.87, 241,869.21 and 142,687.40 is: 213,865.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,370.87 : 241,869.21 = 142,687.40 : x
  2. Step 2: Convert to fraction form
    161,370.87/241,869.21 = 142,687.40/x
  3. Step 3: Cross multiply
    161,370.87x = 241,869.21 × 142,687.40
  4. Step 4: Simplify right side
    161,370.87x = 34,511,688,854.71
  5. Step 5: Solve for x
    x = 34,511,688,854.71/161,370.87
  6. Step 6: Final answer
    x = 213,865.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.