Home / 156,769.10-234,980.85-86,698.70

Finding the Fourth Proportional to 156,769.10, 234,980.85 and 86,698.70

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Solution

The fourth proportional to 156,769.10, 234,980.85 and 86,698.70 is: 129,952.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,769.10 : 234,980.85 = 86,698.70 : x
  2. Step 2: Convert to fraction form
    156,769.10/234,980.85 = 86,698.70/x
  3. Step 3: Cross multiply
    156,769.10x = 234,980.85 × 86,698.70
  4. Step 4: Simplify right side
    156,769.10x = 20,372,534,219.90
  5. Step 5: Solve for x
    x = 20,372,534,219.90/156,769.10
  6. Step 6: Final answer
    x = 129,952.49

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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.