Home / 156,721.70-235,082.55-154,388.90

Finding the Fourth Proportional to 156,721.70, 235,082.55 and 154,388.90

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Solution

The fourth proportional to 156,721.70, 235,082.55 and 154,388.90 is: 231,583.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,721.70 : 235,082.55 = 154,388.90 : x
  2. Step 2: Convert to fraction form
    156,721.70/235,082.55 = 154,388.90/x
  3. Step 3: Cross multiply
    156,721.70x = 235,082.55 × 154,388.90
  4. Step 4: Simplify right side
    156,721.70x = 36,294,136,303.70
  5. Step 5: Solve for x
    x = 36,294,136,303.70/156,721.70
  6. Step 6: Final answer
    x = 231,583.35

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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.