Home / 138,887.10-208,347.33-48,911.21

Finding the Fourth Proportional to 138,887.10, 208,347.33 and 48,911.21

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Solution

The fourth proportional to 138,887.10, 208,347.33 and 48,911.21 is: 73,372.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,887.10 : 208,347.33 = 48,911.21 : x
  2. Step 2: Convert to fraction form
    138,887.10/208,347.33 = 48,911.21/x
  3. Step 3: Cross multiply
    138,887.10x = 208,347.33 × 48,911.21
  4. Step 4: Simplify right side
    138,887.10x = 10,190,521,013.80
  5. Step 5: Solve for x
    x = 10,190,521,013.80/138,887.10
  6. Step 6: Final answer
    x = 73,372.70

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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.