Home / 128,292.91-177,043.04-70,936.20

Finding the Fourth Proportional to 128,292.91, 177,043.04 and 70,936.20

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Solution

The fourth proportional to 128,292.91, 177,043.04 and 70,936.20 is: 97,891.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,292.91 : 177,043.04 = 70,936.20 : x
  2. Step 2: Convert to fraction form
    128,292.91/177,043.04 = 70,936.20/x
  3. Step 3: Cross multiply
    128,292.91x = 177,043.04 × 70,936.20
  4. Step 4: Simplify right side
    128,292.91x = 12,558,760,494.05
  5. Step 5: Solve for x
    x = 12,558,760,494.05/128,292.91
  6. Step 6: Final answer
    x = 97,891.31

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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.