Home / 97,785.20-146,677.80-78,102.20

Finding the Fourth Proportional to 97,785.20, 146,677.80 and 78,102.20

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Solution

The fourth proportional to 97,785.20, 146,677.80 and 78,102.20 is: 117,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,785.20 : 146,677.80 = 78,102.20 : x
  2. Step 2: Convert to fraction form
    97,785.20/146,677.80 = 78,102.20/x
  3. Step 3: Cross multiply
    97,785.20x = 146,677.80 × 78,102.20
  4. Step 4: Simplify right side
    97,785.20x = 11,455,858,871.16
  5. Step 5: Solve for x
    x = 11,455,858,871.16/97,785.20
  6. Step 6: Final answer
    x = 117,153.30

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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.