Home / 117,432.15-161,976.09-74,971.53

Finding the Fourth Proportional to 117,432.15, 161,976.09 and 74,971.53

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Solution

The fourth proportional to 117,432.15, 161,976.09 and 74,971.53 is: 103,409.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,432.15 : 161,976.09 = 74,971.53 : x
  2. Step 2: Convert to fraction form
    117,432.15/161,976.09 = 74,971.53/x
  3. Step 3: Cross multiply
    117,432.15x = 161,976.09 × 74,971.53
  4. Step 4: Simplify right side
    117,432.15x = 12,143,595,290.72
  5. Step 5: Solve for x
    x = 12,143,595,290.72/117,432.15
  6. Step 6: Final answer
    x = 103,409.46

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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.