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Finding the Fourth Proportional to 128,614.33, 177,330.94 and 94,519

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Solution

The fourth proportional to 128,614.33, 177,330.94 and 94,519 is: 130,320.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,614.33 : 177,330.94 = 94,519 : x
  2. Step 2: Convert to fraction form
    128,614.33/177,330.94 = 94,519/x
  3. Step 3: Cross multiply
    128,614.33x = 177,330.94 × 94,519
  4. Step 4: Simplify right side
    128,614.33x = 16,761,143,117.86
  5. Step 5: Solve for x
    x = 16,761,143,117.86/128,614.33
  6. Step 6: Final answer
    x = 130,320.96

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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.