Home / 138,749.85-208,114.07-38,904.75

Finding the Fourth Proportional to 138,749.85, 208,114.07 and 38,904.75

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Solution

The fourth proportional to 138,749.85, 208,114.07 and 38,904.75 is: 58,354.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,749.85 : 208,114.07 = 38,904.75 : x
  2. Step 2: Convert to fraction form
    138,749.85/208,114.07 = 38,904.75/x
  3. Step 3: Cross multiply
    138,749.85x = 208,114.07 × 38,904.75
  4. Step 4: Simplify right side
    138,749.85x = 8,096,625,670.31
  5. Step 5: Solve for x
    x = 8,096,625,670.31/138,749.85
  6. Step 6: Final answer
    x = 58,354.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.