Home / 143,899.85-215,911.94-77,262.15

Finding the Fourth Proportional to 143,899.85, 215,911.94 and 77,262.15

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Solution

The fourth proportional to 143,899.85, 215,911.94 and 77,262.15 is: 115,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,899.85 : 215,911.94 = 77,262.15 : x
  2. Step 2: Convert to fraction form
    143,899.85/215,911.94 = 77,262.15/x
  3. Step 3: Cross multiply
    143,899.85x = 215,911.94 × 77,262.15
  4. Step 4: Simplify right side
    143,899.85x = 16,681,820,308.76
  5. Step 5: Solve for x
    x = 16,681,820,308.76/143,899.85
  6. Step 6: Final answer
    x = 115,926.60

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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.