Home / 155,541.91-214,645.45-87,558.67

Finding the Fourth Proportional to 155,541.91, 214,645.45 and 87,558.67

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Solution

The fourth proportional to 155,541.91, 214,645.45 and 87,558.67 is: 120,829.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,541.91 : 214,645.45 = 87,558.67 : x
  2. Step 2: Convert to fraction form
    155,541.91/214,645.45 = 87,558.67/x
  3. Step 3: Cross multiply
    155,541.91x = 214,645.45 × 87,558.67
  4. Step 4: Simplify right side
    155,541.91x = 18,794,070,123.55
  5. Step 5: Solve for x
    x = 18,794,070,123.55/155,541.91
  6. Step 6: Final answer
    x = 120,829.62

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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.