Home / 156,881.70-235,452.15-72,771.30

Finding the Fourth Proportional to 156,881.70, 235,452.15 and 72,771.30

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Solution

The fourth proportional to 156,881.70, 235,452.15 and 72,771.30 is: 109,217.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,881.70 : 235,452.15 = 72,771.30 : x
  2. Step 2: Convert to fraction form
    156,881.70/235,452.15 = 72,771.30/x
  3. Step 3: Cross multiply
    156,881.70x = 235,452.15 × 72,771.30
  4. Step 4: Simplify right side
    156,881.70x = 17,134,159,043.30
  5. Step 5: Solve for x
    x = 17,134,159,043.30/156,881.70
  6. Step 6: Final answer
    x = 109,217.07

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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.