Home / 99,639.66-137,498.67-54,316.65

Finding the Fourth Proportional to 99,639.66, 137,498.67 and 54,316.65

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Solution

The fourth proportional to 99,639.66, 137,498.67 and 54,316.65 is: 74,954.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,639.66 : 137,498.67 = 54,316.65 : x
  2. Step 2: Convert to fraction form
    99,639.66/137,498.67 = 54,316.65/x
  3. Step 3: Cross multiply
    99,639.66x = 137,498.67 × 54,316.65
  4. Step 4: Simplify right side
    99,639.66x = 7,468,467,133.86
  5. Step 5: Solve for x
    x = 7,468,467,133.86/99,639.66
  6. Step 6: Final answer
    x = 74,954.76

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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.