Home / 117,619.20-176,428.80-107,942.40

Finding the Fourth Proportional to 117,619.20, 176,428.80 and 107,942.40

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Solution

The fourth proportional to 117,619.20, 176,428.80 and 107,942.40 is: 161,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,619.20 : 176,428.80 = 107,942.40 : x
  2. Step 2: Convert to fraction form
    117,619.20/176,428.80 = 107,942.40/x
  3. Step 3: Cross multiply
    117,619.20x = 176,428.80 × 107,942.40
  4. Step 4: Simplify right side
    117,619.20x = 19,044,148,101.12
  5. Step 5: Solve for x
    x = 19,044,148,101.12/117,619.20
  6. Step 6: Final answer
    x = 161,913.60

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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.