Home / 128,825.06-177,688.64-124,489.94

Finding the Fourth Proportional to 128,825.06, 177,688.64 and 124,489.94

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Solution

The fourth proportional to 128,825.06, 177,688.64 and 124,489.94 is: 171,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,825.06 : 177,688.64 = 124,489.94 : x
  2. Step 2: Convert to fraction form
    128,825.06/177,688.64 = 124,489.94/x
  3. Step 3: Cross multiply
    128,825.06x = 177,688.64 × 124,489.94
  4. Step 4: Simplify right side
    128,825.06x = 22,120,447,509.83
  5. Step 5: Solve for x
    x = 22,120,447,509.83/128,825.06
  6. Step 6: Final answer
    x = 171,709.20

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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.