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Finding the Fourth Proportional to 128,580.84, 192,871.28 and 62,008.56

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Solution

The fourth proportional to 128,580.84, 192,871.28 and 62,008.56 is: 93,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,580.84 : 192,871.28 = 62,008.56 : x
  2. Step 2: Convert to fraction form
    128,580.84/192,871.28 = 62,008.56/x
  3. Step 3: Cross multiply
    128,580.84x = 192,871.28 × 62,008.56
  4. Step 4: Simplify right side
    128,580.84x = 11,959,670,338.16
  5. Step 5: Solve for x
    x = 11,959,670,338.16/128,580.84
  6. Step 6: Final answer
    x = 93,012.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.