Home / 130,213.12-179,706.04-81,822.92

Finding the Fourth Proportional to 130,213.12, 179,706.04 and 81,822.92

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Solution

The fourth proportional to 130,213.12, 179,706.04 and 81,822.92 is: 112,923.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,213.12 : 179,706.04 = 81,822.92 : x
  2. Step 2: Convert to fraction form
    130,213.12/179,706.04 = 81,822.92/x
  3. Step 3: Cross multiply
    130,213.12x = 179,706.04 × 81,822.92
  4. Step 4: Simplify right side
    130,213.12x = 14,704,072,934.44
  5. Step 5: Solve for x
    x = 14,704,072,934.44/130,213.12
  6. Step 6: Final answer
    x = 112,923.13

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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.