Home / 91,761.57-137,420.93-52,198.74

Finding the Fourth Proportional to 91,761.57, 137,420.93 and 52,198.74

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Solution

The fourth proportional to 91,761.57, 137,420.93 and 52,198.74 is: 78,172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,761.57 : 137,420.93 = 52,198.74 : x
  2. Step 2: Convert to fraction form
    91,761.57/137,420.93 = 52,198.74/x
  3. Step 3: Cross multiply
    91,761.57x = 137,420.93 × 52,198.74
  4. Step 4: Simplify right side
    91,761.57x = 7,173,199,478.19
  5. Step 5: Solve for x
    x = 7,173,199,478.19/91,761.57
  6. Step 6: Final answer
    x = 78,172.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.