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Finding the Fourth Proportional to 143,911.92, 215,852.40 and 38,741.52

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Solution

The fourth proportional to 143,911.92, 215,852.40 and 38,741.52 is: 58,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,911.92 : 215,852.40 = 38,741.52 : x
  2. Step 2: Convert to fraction form
    143,911.92/215,852.40 = 38,741.52/x
  3. Step 3: Cross multiply
    143,911.92x = 215,852.40 × 38,741.52
  4. Step 4: Simplify right side
    143,911.92x = 8,362,450,071.65
  5. Step 5: Solve for x
    x = 8,362,450,071.65/143,911.92
  6. Step 6: Final answer
    x = 58,108.11

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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.