Home / 117,732.16-162,517.44-72,428.50

Finding the Fourth Proportional to 117,732.16, 162,517.44 and 72,428.50

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Solution

The fourth proportional to 117,732.16, 162,517.44 and 72,428.50 is: 99,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,732.16 : 162,517.44 = 72,428.50 : x
  2. Step 2: Convert to fraction form
    117,732.16/162,517.44 = 72,428.50/x
  3. Step 3: Cross multiply
    117,732.16x = 162,517.44 × 72,428.50
  4. Step 4: Simplify right side
    117,732.16x = 11,770,894,403.04
  5. Step 5: Solve for x
    x = 11,770,894,403.04/117,732.16
  6. Step 6: Final answer
    x = 99,980.28

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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.