Home / 156,965.70-235,578.15-72,855.30

Finding the Fourth Proportional to 156,965.70, 235,578.15 and 72,855.30

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Solution

The fourth proportional to 156,965.70, 235,578.15 and 72,855.30 is: 109,343.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,965.70 : 235,578.15 = 72,855.30 : x
  2. Step 2: Convert to fraction form
    156,965.70/235,578.15 = 72,855.30/x
  3. Step 3: Cross multiply
    156,965.70x = 235,578.15 × 72,855.30
  4. Step 4: Simplify right side
    156,965.70x = 17,163,116,791.70
  5. Step 5: Solve for x
    x = 17,163,116,791.70/156,965.70
  6. Step 6: Final answer
    x = 109,343.10

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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.