Home / 115,529.40-173,294.10-78,204.60

Finding the Fourth Proportional to 115,529.40, 173,294.10 and 78,204.60

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Solution

The fourth proportional to 115,529.40, 173,294.10 and 78,204.60 is: 117,306.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,529.40 : 173,294.10 = 78,204.60 : x
  2. Step 2: Convert to fraction form
    115,529.40/173,294.10 = 78,204.60/x
  3. Step 3: Cross multiply
    115,529.40x = 173,294.10 × 78,204.60
  4. Step 4: Simplify right side
    115,529.40x = 13,552,395,772.86
  5. Step 5: Solve for x
    x = 13,552,395,772.86/115,529.40
  6. Step 6: Final answer
    x = 117,306.90

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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.