Home / 99,830.46-137,789.01-65,845.02

Finding the Fourth Proportional to 99,830.46, 137,789.01 and 65,845.02

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Solution

The fourth proportional to 99,830.46, 137,789.01 and 65,845.02 is: 90,881.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,830.46 : 137,789.01 = 65,845.02 : x
  2. Step 2: Convert to fraction form
    99,830.46/137,789.01 = 65,845.02/x
  3. Step 3: Cross multiply
    99,830.46x = 137,789.01 × 65,845.02
  4. Step 4: Simplify right side
    99,830.46x = 9,072,720,119.23
  5. Step 5: Solve for x
    x = 9,072,720,119.23/99,830.46
  6. Step 6: Final answer
    x = 90,881.28

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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.