Home / 156,930.21-216,581.85-93,267.45

Finding the Fourth Proportional to 156,930.21, 216,581.85 and 93,267.45

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Solution

The fourth proportional to 156,930.21, 216,581.85 and 93,267.45 is: 128,719.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.21 : 216,581.85 = 93,267.45 : x
  2. Step 2: Convert to fraction form
    156,930.21/216,581.85 = 93,267.45/x
  3. Step 3: Cross multiply
    156,930.21x = 216,581.85 × 93,267.45
  4. Step 4: Simplify right side
    156,930.21x = 20,200,036,865.78
  5. Step 5: Solve for x
    x = 20,200,036,865.78/156,930.21
  6. Step 6: Final answer
    x = 128,719.87

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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.