Home / 156,631.10-235,019.55-81,835.70

Finding the Fourth Proportional to 156,631.10, 235,019.55 and 81,835.70

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Solution

The fourth proportional to 156,631.10, 235,019.55 and 81,835.70 is: 122,791.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,631.10 : 235,019.55 = 81,835.70 : x
  2. Step 2: Convert to fraction form
    156,631.10/235,019.55 = 81,835.70/x
  3. Step 3: Cross multiply
    156,631.10x = 235,019.55 × 81,835.70
  4. Step 4: Simplify right side
    156,631.10x = 19,232,989,387.94
  5. Step 5: Solve for x
    x = 19,232,989,387.94/156,631.10
  6. Step 6: Final answer
    x = 122,791.64

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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.