Home / 100,564.38-138,763.40-58,114.71

Finding the Fourth Proportional to 100,564.38, 138,763.40 and 58,114.71

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Solution

The fourth proportional to 100,564.38, 138,763.40 and 58,114.71 is: 80,189.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,564.38 : 138,763.40 = 58,114.71 : x
  2. Step 2: Convert to fraction form
    100,564.38/138,763.40 = 58,114.71/x
  3. Step 3: Cross multiply
    100,564.38x = 138,763.40 × 58,114.71
  4. Step 4: Simplify right side
    100,564.38x = 8,064,194,459.04
  5. Step 5: Solve for x
    x = 8,064,194,459.04/100,564.38
  6. Step 6: Final answer
    x = 80,189.37

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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.