Home / 168,117.12-231,992.10-100,210.77

Finding the Fourth Proportional to 168,117.12, 231,992.10 and 100,210.77

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Solution

The fourth proportional to 168,117.12, 231,992.10 and 100,210.77 is: 138,285.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,117.12 : 231,992.10 = 100,210.77 : x
  2. Step 2: Convert to fraction form
    168,117.12/231,992.10 = 100,210.77/x
  3. Step 3: Cross multiply
    168,117.12x = 231,992.10 × 100,210.77
  4. Step 4: Simplify right side
    168,117.12x = 23,248,106,974.92
  5. Step 5: Solve for x
    x = 23,248,106,974.92/168,117.12
  6. Step 6: Final answer
    x = 138,285.18

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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.