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Finding the Fourth Proportional to 128,264.48, 177,026.30 and 82,952.56

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Solution

The fourth proportional to 128,264.48, 177,026.30 and 82,952.56 is: 114,488.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,264.48 : 177,026.30 = 82,952.56 : x
  2. Step 2: Convert to fraction form
    128,264.48/177,026.30 = 82,952.56/x
  3. Step 3: Cross multiply
    128,264.48x = 177,026.30 × 82,952.56
  4. Step 4: Simplify right side
    128,264.48x = 14,684,784,772.33
  5. Step 5: Solve for x
    x = 14,684,784,772.33/128,264.48
  6. Step 6: Final answer
    x = 114,488.32

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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.