Home / 103,928.34-143,421.21-56,181.69

Finding the Fourth Proportional to 103,928.34, 143,421.21 and 56,181.69

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Solution

The fourth proportional to 103,928.34, 143,421.21 and 56,181.69 is: 77,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,928.34 : 143,421.21 = 56,181.69 : x
  2. Step 2: Convert to fraction form
    103,928.34/143,421.21 = 56,181.69/x
  3. Step 3: Cross multiply
    103,928.34x = 143,421.21 × 56,181.69
  4. Step 4: Simplify right side
    103,928.34x = 8,057,645,959.64
  5. Step 5: Solve for x
    x = 8,057,645,959.64/103,928.34
  6. Step 6: Final answer
    x = 77,530.79

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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.