Home / 99,288.82-137,021.52-61,070.79

Finding the Fourth Proportional to 99,288.82, 137,021.52 and 61,070.79

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Solution

The fourth proportional to 99,288.82, 137,021.52 and 61,070.79 is: 84,279.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,288.82 : 137,021.52 = 61,070.79 : x
  2. Step 2: Convert to fraction form
    99,288.82/137,021.52 = 61,070.79/x
  3. Step 3: Cross multiply
    99,288.82x = 137,021.52 × 61,070.79
  4. Step 4: Simplify right side
    99,288.82x = 8,368,013,216.25
  5. Step 5: Solve for x
    x = 8,368,013,216.25/99,288.82
  6. Step 6: Final answer
    x = 84,279.51

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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.