Home / 128,414.30-177,381.06-98,568.44

Finding the Fourth Proportional to 128,414.30, 177,381.06 and 98,568.44

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Solution

The fourth proportional to 128,414.30, 177,381.06 and 98,568.44 is: 136,154.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,414.30 : 177,381.06 = 98,568.44 : x
  2. Step 2: Convert to fraction form
    128,414.30/177,381.06 = 98,568.44/x
  3. Step 3: Cross multiply
    128,414.30x = 177,381.06 × 98,568.44
  4. Step 4: Simplify right side
    128,414.30x = 17,484,173,482.84
  5. Step 5: Solve for x
    x = 17,484,173,482.84/128,414.30
  6. Step 6: Final answer
    x = 136,154.41

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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.