Home / 99,869.98-137,823.86-54,550.64

Finding the Fourth Proportional to 99,869.98, 137,823.86 and 54,550.64

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Solution

The fourth proportional to 99,869.98, 137,823.86 and 54,550.64 is: 75,281.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,869.98 : 137,823.86 = 54,550.64 : x
  2. Step 2: Convert to fraction form
    99,869.98/137,823.86 = 54,550.64/x
  3. Step 3: Cross multiply
    99,869.98x = 137,823.86 × 54,550.64
  4. Step 4: Simplify right side
    99,869.98x = 7,518,379,770.27
  5. Step 5: Solve for x
    x = 7,518,379,770.27/99,869.98
  6. Step 6: Final answer
    x = 75,281.68

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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.