Home / 123,808-170,861.52-72,823.36

Finding the Fourth Proportional to 123,808, 170,861.52 and 72,823.36

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Solution

The fourth proportional to 123,808, 170,861.52 and 72,823.36 is: 100,500.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,808 : 170,861.52 = 72,823.36 : x
  2. Step 2: Convert to fraction form
    123,808/170,861.52 = 72,823.36/x
  3. Step 3: Cross multiply
    123,808x = 170,861.52 × 72,823.36
  4. Step 4: Simplify right side
    123,808x = 12,442,709,981.11
  5. Step 5: Solve for x
    x = 12,442,709,981.11/123,808
  6. Step 6: Final answer
    x = 100,500.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.