Home / 97,747.20-146,620.80-77,918.40

Finding the Fourth Proportional to 97,747.20, 146,620.80 and 77,918.40

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Solution

The fourth proportional to 97,747.20, 146,620.80 and 77,918.40 is: 116,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,747.20 : 146,620.80 = 77,918.40 : x
  2. Step 2: Convert to fraction form
    97,747.20/146,620.80 = 77,918.40/x
  3. Step 3: Cross multiply
    97,747.20x = 146,620.80 × 77,918.40
  4. Step 4: Simplify right side
    97,747.20x = 11,424,458,142.72
  5. Step 5: Solve for x
    x = 11,424,458,142.72/97,747.20
  6. Step 6: Final answer
    x = 116,877.60

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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.