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Finding the Fourth Proportional to 147,842.70, 221,764.05 and 91,746.15

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Solution

The fourth proportional to 147,842.70, 221,764.05 and 91,746.15 is: 137,619.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,842.70 : 221,764.05 = 91,746.15 : x
  2. Step 2: Convert to fraction form
    147,842.70/221,764.05 = 91,746.15/x
  3. Step 3: Cross multiply
    147,842.70x = 221,764.05 × 91,746.15
  4. Step 4: Simplify right side
    147,842.70x = 20,345,997,795.91
  5. Step 5: Solve for x
    x = 20,345,997,795.91/147,842.70
  6. Step 6: Final answer
    x = 137,619.23

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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.