Home / 156,554.96-216,066.20-87,670.65

Finding the Fourth Proportional to 156,554.96, 216,066.20 and 87,670.65

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Solution

The fourth proportional to 156,554.96, 216,066.20 and 87,670.65 is: 120,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,554.96 : 216,066.20 = 87,670.65 : x
  2. Step 2: Convert to fraction form
    156,554.96/216,066.20 = 87,670.65/x
  3. Step 3: Cross multiply
    156,554.96x = 216,066.20 × 87,670.65
  4. Step 4: Simplify right side
    156,554.96x = 18,942,663,758.68
  5. Step 5: Solve for x
    x = 18,942,663,758.68/156,554.96
  6. Step 6: Final answer
    x = 120,996.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.