Home / 123,463.45-170,378.13-72,467.20

Finding the Fourth Proportional to 123,463.45, 170,378.13 and 72,467.20

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Solution

The fourth proportional to 123,463.45, 170,378.13 and 72,467.20 is: 100,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,463.45 : 170,378.13 = 72,467.20 : x
  2. Step 2: Convert to fraction form
    123,463.45/170,378.13 = 72,467.20/x
  3. Step 3: Cross multiply
    123,463.45x = 170,378.13 × 72,467.20
  4. Step 4: Simplify right side
    123,463.45x = 12,346,826,022.34
  5. Step 5: Solve for x
    x = 12,346,826,022.34/123,463.45
  6. Step 6: Final answer
    x = 100,003.90

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1.5x scale

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.