Home / 112,002,506.80-168,003,760.20-81,391,505.20

Finding the Fourth Proportional to 112,002,506.80, 168,003,760.20 and 81,391,505.20

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Solution

The fourth proportional to 112,002,506.80, 168,003,760.20 and 81,391,505.20 is: 122,087,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,002,506.80 : 168,003,760.20 = 81,391,505.20 : x
  2. Step 2: Convert to fraction form
    112,002,506.80/168,003,760.20 = 81,391,505.20/x
  3. Step 3: Cross multiply
    112,002,506.80x = 168,003,760.20 × 81,391,505.20
  4. Step 4: Simplify right side
    112,002,506.80x = 13,674,078,921,937,852
  5. Step 5: Solve for x
    x = 13,674,078,921,937,852/112,002,506.80
  6. Step 6: Final answer
    x = 122,087,257.80

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1.5x scale

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.