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Finding the Fourth Proportional to 99,655.92, 137,518.92 and 57,184.56

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Solution

The fourth proportional to 99,655.92, 137,518.92 and 57,184.56 is: 78,911.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,655.92 : 137,518.92 = 57,184.56 : x
  2. Step 2: Convert to fraction form
    99,655.92/137,518.92 = 57,184.56/x
  3. Step 3: Cross multiply
    99,655.92x = 137,518.92 × 57,184.56
  4. Step 4: Simplify right side
    99,655.92x = 7,863,958,931.88
  5. Step 5: Solve for x
    x = 7,863,958,931.88/99,655.92
  6. Step 6: Final answer
    x = 78,911.11

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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.