Home / 103,438.24-142,733.92-69,439.84

Finding the Fourth Proportional to 103,438.24, 142,733.92 and 69,439.84

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Solution

The fourth proportional to 103,438.24, 142,733.92 and 69,439.84 is: 95,819.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,438.24 : 142,733.92 = 69,439.84 : x
  2. Step 2: Convert to fraction form
    103,438.24/142,733.92 = 69,439.84/x
  3. Step 3: Cross multiply
    103,438.24x = 142,733.92 × 69,439.84
  4. Step 4: Simplify right side
    103,438.24x = 9,911,420,567.37
  5. Step 5: Solve for x
    x = 9,911,420,567.37/103,438.24
  6. Step 6: Final answer
    x = 95,819.69

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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.