Home / 124,786.13-172,144.64-81,746.84

Finding the Fourth Proportional to 124,786.13, 172,144.64 and 81,746.84

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Solution

The fourth proportional to 124,786.13, 172,144.64 and 81,746.84 is: 112,771.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,786.13 : 172,144.64 = 81,746.84 : x
  2. Step 2: Convert to fraction form
    124,786.13/172,144.64 = 81,746.84/x
  3. Step 3: Cross multiply
    124,786.13x = 172,144.64 × 81,746.84
  4. Step 4: Simplify right side
    124,786.13x = 14,072,280,977.67
  5. Step 5: Solve for x
    x = 14,072,280,977.67/124,786.13
  6. Step 6: Final answer
    x = 112,771.20

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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.