Home / 156,795.10-235,019.85-86,724.70

Finding the Fourth Proportional to 156,795.10, 235,019.85 and 86,724.70

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Solution

The fourth proportional to 156,795.10, 235,019.85 and 86,724.70 is: 129,991.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,795.10 : 235,019.85 = 86,724.70 : x
  2. Step 2: Convert to fraction form
    156,795.10/235,019.85 = 86,724.70/x
  3. Step 3: Cross multiply
    156,795.10x = 235,019.85 × 86,724.70
  4. Step 4: Simplify right side
    156,795.10x = 20,382,025,985.30
  5. Step 5: Solve for x
    x = 20,382,025,985.30/156,795.10
  6. Step 6: Final answer
    x = 129,991.47

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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.