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Finding the Fourth Proportional to 95,443.88, 143,129.81 and 76,677.80

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Solution

The fourth proportional to 95,443.88, 143,129.81 and 76,677.80 is: 114,987.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,443.88 : 143,129.81 = 76,677.80 : x
  2. Step 2: Convert to fraction form
    95,443.88/143,129.81 = 76,677.80/x
  3. Step 3: Cross multiply
    95,443.88x = 143,129.81 × 76,677.80
  4. Step 4: Simplify right side
    95,443.88x = 10,974,878,421.26
  5. Step 5: Solve for x
    x = 10,974,878,421.26/95,443.88
  6. Step 6: Final answer
    x = 114,987.77

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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.