Home / 117,945.60-176,918.40-91,669.20

Finding the Fourth Proportional to 117,945.60, 176,918.40 and 91,669.20

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Solution

The fourth proportional to 117,945.60, 176,918.40 and 91,669.20 is: 137,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,945.60 : 176,918.40 = 91,669.20 : x
  2. Step 2: Convert to fraction form
    117,945.60/176,918.40 = 91,669.20/x
  3. Step 3: Cross multiply
    117,945.60x = 176,918.40 × 91,669.20
  4. Step 4: Simplify right side
    117,945.60x = 16,217,968,193.28
  5. Step 5: Solve for x
    x = 16,217,968,193.28/117,945.60
  6. Step 6: Final answer
    x = 137,503.80

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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.