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Finding the Fourth Proportional to 99,491.74, 137,295.18 and 54,168.94

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Solution

The fourth proportional to 99,491.74, 137,295.18 and 54,168.94 is: 74,751.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,491.74 : 137,295.18 = 54,168.94 : x
  2. Step 2: Convert to fraction form
    99,491.74/137,295.18 = 54,168.94/x
  3. Step 3: Cross multiply
    99,491.74x = 137,295.18 × 54,168.94
  4. Step 4: Simplify right side
    99,491.74x = 7,437,134,367.71
  5. Step 5: Solve for x
    x = 7,437,134,367.71/99,491.74
  6. Step 6: Final answer
    x = 74,751.27

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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.