Home / 123,899,170.32-171,002,256.30-71,716,977.72

Finding the Fourth Proportional to 123,899,170.32, 171,002,256.30 and 71,716,977.72

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Solution

The fourth proportional to 123,899,170.32, 171,002,256.30 and 71,716,977.72 is: 98,981,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,899,170.32 : 171,002,256.30 = 71,716,977.72 : x
  2. Step 2: Convert to fraction form
    123,899,170.32/171,002,256.30 = 71,716,977.72/x
  3. Step 3: Cross multiply
    123,899,170.32x = 171,002,256.30 × 71,716,977.72
  4. Step 4: Simplify right side
    123,899,170.32x = 12,263,765,005,136,830
  5. Step 5: Solve for x
    x = 12,263,765,005,136,830/123,899,170.32
  6. Step 6: Final answer
    x = 98,981,817.02

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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.