Home / 156,972.80-235,459.20-51,786.20

Finding the Fourth Proportional to 156,972.80, 235,459.20 and 51,786.20

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Solution

The fourth proportional to 156,972.80, 235,459.20 and 51,786.20 is: 77,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,972.80 : 235,459.20 = 51,786.20 : x
  2. Step 2: Convert to fraction form
    156,972.80/235,459.20 = 51,786.20/x
  3. Step 3: Cross multiply
    156,972.80x = 235,459.20 × 51,786.20
  4. Step 4: Simplify right side
    156,972.80x = 12,193,537,223.04
  5. Step 5: Solve for x
    x = 12,193,537,223.04/156,972.80
  6. Step 6: Final answer
    x = 77,679.30

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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.