Home / 97,739.80-146,609.70-87,890.20

Finding the Fourth Proportional to 97,739.80, 146,609.70 and 87,890.20

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Solution

The fourth proportional to 97,739.80, 146,609.70 and 87,890.20 is: 131,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,739.80 : 146,609.70 = 87,890.20 : x
  2. Step 2: Convert to fraction form
    97,739.80/146,609.70 = 87,890.20/x
  3. Step 3: Cross multiply
    97,739.80x = 146,609.70 × 87,890.20
  4. Step 4: Simplify right side
    97,739.80x = 12,885,555,854.94
  5. Step 5: Solve for x
    x = 12,885,555,854.94/97,739.80
  6. Step 6: Final answer
    x = 131,835.30

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Similar ratio
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1.5x scale

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.