Home / 103,872.05-143,311.56-63,543.77

Finding the Fourth Proportional to 103,872.05, 143,311.56 and 63,543.77

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Solution

The fourth proportional to 103,872.05, 143,311.56 and 63,543.77 is: 87,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,872.05 : 143,311.56 = 63,543.77 : x
  2. Step 2: Convert to fraction form
    103,872.05/143,311.56 = 63,543.77/x
  3. Step 3: Cross multiply
    103,872.05x = 143,311.56 × 63,543.77
  4. Step 4: Simplify right side
    103,872.05x = 9,106,556,389.55
  5. Step 5: Solve for x
    x = 9,106,556,389.55/103,872.05
  6. Step 6: Final answer
    x = 87,670.90

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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.