Home / 100,447.32-138,614.54-55,124.98

Finding the Fourth Proportional to 100,447.32, 138,614.54 and 55,124.98

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Solution

The fourth proportional to 100,447.32, 138,614.54 and 55,124.98 is: 76,070.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,447.32 : 138,614.54 = 55,124.98 : x
  2. Step 2: Convert to fraction form
    100,447.32/138,614.54 = 55,124.98/x
  3. Step 3: Cross multiply
    100,447.32x = 138,614.54 × 55,124.98
  4. Step 4: Simplify right side
    100,447.32x = 7,641,123,745.21
  5. Step 5: Solve for x
    x = 7,641,123,745.21/100,447.32
  6. Step 6: Final answer
    x = 76,070.96

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1.5x scale

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.