Home / 115,211.45-172,840.70-65,313.83

Finding the Fourth Proportional to 115,211.45, 172,840.70 and 65,313.83

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Solution

The fourth proportional to 115,211.45, 172,840.70 and 65,313.83 is: 97,984.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,211.45 : 172,840.70 = 65,313.83 : x
  2. Step 2: Convert to fraction form
    115,211.45/172,840.70 = 65,313.83/x
  3. Step 3: Cross multiply
    115,211.45x = 172,840.70 × 65,313.83
  4. Step 4: Simplify right side
    115,211.45x = 11,288,888,692.27
  5. Step 5: Solve for x
    x = 11,288,888,692.27/115,211.45
  6. Step 6: Final answer
    x = 97,984.08

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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.