Home / 128,273.36-177,017.47-71,684.73

Finding the Fourth Proportional to 128,273.36, 177,017.47 and 71,684.73

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Solution

The fourth proportional to 128,273.36, 177,017.47 and 71,684.73 is: 98,925.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,273.36 : 177,017.47 = 71,684.73 : x
  2. Step 2: Convert to fraction form
    128,273.36/177,017.47 = 71,684.73/x
  3. Step 3: Cross multiply
    128,273.36x = 177,017.47 × 71,684.73
  4. Step 4: Simplify right side
    128,273.36x = 12,689,449,363.02
  5. Step 5: Solve for x
    x = 12,689,449,363.02/128,273.36
  6. Step 6: Final answer
    x = 98,925.06

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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.