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Finding the Fourth Proportional to 88,114.91, 131,971.73 and 69,020.34

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Solution

The fourth proportional to 88,114.91, 131,971.73 and 69,020.34 is: 103,373.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,114.91 : 131,971.73 = 69,020.34 : x
  2. Step 2: Convert to fraction form
    88,114.91/131,971.73 = 69,020.34/x
  3. Step 3: Cross multiply
    88,114.91x = 131,971.73 × 69,020.34
  4. Step 4: Simplify right side
    88,114.91x = 9,108,733,015.13
  5. Step 5: Solve for x
    x = 9,108,733,015.13/88,114.91
  6. Step 6: Final answer
    x = 103,373.35

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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.