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Finding the Fourth Proportional to 100,606.08, 138,828.24 and 58,167.34

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Solution

The fourth proportional to 100,606.08, 138,828.24 and 58,167.34 is: 80,266.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,606.08 : 138,828.24 = 58,167.34 : x
  2. Step 2: Convert to fraction form
    100,606.08/138,828.24 = 58,167.34/x
  3. Step 3: Cross multiply
    100,606.08x = 138,828.24 × 58,167.34
  4. Step 4: Simplify right side
    100,606.08x = 8,075,269,437.68
  5. Step 5: Solve for x
    x = 8,075,269,437.68/100,606.08
  6. Step 6: Final answer
    x = 80,266.22

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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.