Home / 156,556.41-216,068.21-87,672.11

Finding the Fourth Proportional to 156,556.41, 216,068.21 and 87,672.11

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Solution

The fourth proportional to 156,556.41, 216,068.21 and 87,672.11 is: 120,998.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,556.41 : 216,068.21 = 87,672.11 : x
  2. Step 2: Convert to fraction form
    156,556.41/216,068.21 = 87,672.11/x
  3. Step 3: Cross multiply
    156,556.41x = 216,068.21 × 87,672.11
  4. Step 4: Simplify right side
    156,556.41x = 18,943,154,355.92
  5. Step 5: Solve for x
    x = 18,943,154,355.92/156,556.41
  6. Step 6: Final answer
    x = 120,998.91

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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.