Home / 99,510.26-137,322.18-54,188.80

Finding the Fourth Proportional to 99,510.26, 137,322.18 and 54,188.80

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Solution

The fourth proportional to 99,510.26, 137,322.18 and 54,188.80 is: 74,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,510.26 : 137,322.18 = 54,188.80 : x
  2. Step 2: Convert to fraction form
    99,510.26/137,322.18 = 54,188.80/x
  3. Step 3: Cross multiply
    99,510.26x = 137,322.18 × 54,188.80
  4. Step 4: Simplify right side
    99,510.26x = 7,441,324,147.58
  5. Step 5: Solve for x
    x = 7,441,324,147.58/99,510.26
  6. Step 6: Final answer
    x = 74,779.47

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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.