Home / 128,824.86-177,787.41-71,482.53

Finding the Fourth Proportional to 128,824.86, 177,787.41 and 71,482.53

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Solution

The fourth proportional to 128,824.86, 177,787.41 and 71,482.53 is: 98,650.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,824.86 : 177,787.41 = 71,482.53 : x
  2. Step 2: Convert to fraction form
    128,824.86/177,787.41 = 71,482.53/x
  3. Step 3: Cross multiply
    128,824.86x = 177,787.41 × 71,482.53
  4. Step 4: Simplify right side
    128,824.86x = 12,708,693,868.95
  5. Step 5: Solve for x
    x = 12,708,693,868.95/128,824.86
  6. Step 6: Final answer
    x = 98,650.94

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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.