Home / 128,453.76-177,268.41-71,097.81

Finding the Fourth Proportional to 128,453.76, 177,268.41 and 71,097.81

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Solution

The fourth proportional to 128,453.76, 177,268.41 and 71,097.81 is: 98,116.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,453.76 : 177,268.41 = 71,097.81 : x
  2. Step 2: Convert to fraction form
    128,453.76/177,268.41 = 71,097.81/x
  3. Step 3: Cross multiply
    128,453.76x = 177,268.41 × 71,097.81
  4. Step 4: Simplify right side
    128,453.76x = 12,603,395,733.18
  5. Step 5: Solve for x
    x = 12,603,395,733.18/128,453.76
  6. Step 6: Final answer
    x = 98,116.21

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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.