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Finding the Fourth Proportional to 99,703.16, 137,584.14 and 54,992.12

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Solution

The fourth proportional to 99,703.16, 137,584.14 and 54,992.12 is: 75,885.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,703.16 : 137,584.14 = 54,992.12 : x
  2. Step 2: Convert to fraction form
    99,703.16/137,584.14 = 54,992.12/x
  3. Step 3: Cross multiply
    99,703.16x = 137,584.14 × 54,992.12
  4. Step 4: Simplify right side
    99,703.16x = 7,566,043,536.98
  5. Step 5: Solve for x
    x = 7,566,043,536.98/99,703.16
  6. Step 6: Final answer
    x = 75,885.69

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1.5x scale

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.