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Finding the Fourth Proportional to 100,363.41, 138,507.63 and 57,924.67

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Solution

The fourth proportional to 100,363.41, 138,507.63 and 57,924.67 is: 79,939.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,363.41 : 138,507.63 = 57,924.67 : x
  2. Step 2: Convert to fraction form
    100,363.41/138,507.63 = 57,924.67/x
  3. Step 3: Cross multiply
    100,363.41x = 138,507.63 × 57,924.67
  4. Step 4: Simplify right side
    100,363.41x = 8,023,008,760.23
  5. Step 5: Solve for x
    x = 8,023,008,760.23/100,363.41
  6. Step 6: Final answer
    x = 79,939.58

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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.