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Finding the Fourth Proportional to 99,835.59, 137,803.62 and 61,606.83

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Solution

The fourth proportional to 99,835.59, 137,803.62 and 61,606.83 is: 85,036.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,835.59 : 137,803.62 = 61,606.83 : x
  2. Step 2: Convert to fraction form
    99,835.59/137,803.62 = 61,606.83/x
  3. Step 3: Cross multiply
    99,835.59x = 137,803.62 × 61,606.83
  4. Step 4: Simplify right side
    99,835.59x = 8,489,644,190.72
  5. Step 5: Solve for x
    x = 8,489,644,190.72/99,835.59
  6. Step 6: Final answer
    x = 85,036.25

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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.