Home / 99,221.13-136,921.23-53,898.21

Finding the Fourth Proportional to 99,221.13, 136,921.23 and 53,898.21

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Solution

The fourth proportional to 99,221.13, 136,921.23 and 53,898.21 is: 74,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,221.13 : 136,921.23 = 53,898.21 : x
  2. Step 2: Convert to fraction form
    99,221.13/136,921.23 = 53,898.21/x
  3. Step 3: Cross multiply
    99,221.13x = 136,921.23 × 53,898.21
  4. Step 4: Simplify right side
    99,221.13x = 7,379,809,208.00
  5. Step 5: Solve for x
    x = 7,379,809,208.00/99,221.13
  6. Step 6: Final answer
    x = 74,377.40

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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.