Home / 103,770.42-143,218.43-63,477.68

Finding the Fourth Proportional to 103,770.42, 143,218.43 and 63,477.68

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Solution

The fourth proportional to 103,770.42, 143,218.43 and 63,477.68 is: 87,608.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,770.42 : 143,218.43 = 63,477.68 : x
  2. Step 2: Convert to fraction form
    103,770.42/143,218.43 = 63,477.68/x
  3. Step 3: Cross multiply
    103,770.42x = 143,218.43 × 63,477.68
  4. Step 4: Simplify right side
    103,770.42x = 9,091,172,874.20
  5. Step 5: Solve for x
    x = 9,091,172,874.20/103,770.42
  6. Step 6: Final answer
    x = 87,608.52

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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.