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Finding the Fourth Proportional to 101,808.67, 140,501.51 and 66,029.35

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Solution

The fourth proportional to 101,808.67, 140,501.51 and 66,029.35 is: 91,124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,808.67 : 140,501.51 = 66,029.35 : x
  2. Step 2: Convert to fraction form
    101,808.67/140,501.51 = 66,029.35/x
  3. Step 3: Cross multiply
    101,808.67x = 140,501.51 × 66,029.35
  4. Step 4: Simplify right side
    101,808.67x = 9,277,223,379.32
  5. Step 5: Solve for x
    x = 9,277,223,379.32/101,808.67
  6. Step 6: Final answer
    x = 91,124.10

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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.