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Finding the Fourth Proportional to 99,366.94, 137,122.23 and 56,929.42

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Solution

The fourth proportional to 99,366.94, 137,122.23 and 56,929.42 is: 78,560.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,366.94 : 137,122.23 = 56,929.42 : x
  2. Step 2: Convert to fraction form
    99,366.94/137,122.23 = 56,929.42/x
  3. Step 3: Cross multiply
    99,366.94x = 137,122.23 × 56,929.42
  4. Step 4: Simplify right side
    99,366.94x = 7,806,289,023.01
  5. Step 5: Solve for x
    x = 7,806,289,023.01/99,366.94
  6. Step 6: Final answer
    x = 78,560.22

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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.