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Finding the Fourth Proportional to 99,307.91, 137,076.30 and 63,498.08

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Solution

The fourth proportional to 99,307.91, 137,076.30 and 63,498.08 is: 87,647.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,307.91 : 137,076.30 = 63,498.08 : x
  2. Step 2: Convert to fraction form
    99,307.91/137,076.30 = 63,498.08/x
  3. Step 3: Cross multiply
    99,307.91x = 137,076.30 × 63,498.08
  4. Step 4: Simplify right side
    99,307.91x = 8,704,082,206.19
  5. Step 5: Solve for x
    x = 8,704,082,206.19/99,307.91
  6. Step 6: Final answer
    x = 87,647.42

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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.