Home / 128,916.86-177,902.49-71,552.83

Finding the Fourth Proportional to 128,916.86, 177,902.49 and 71,552.83

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Solution

The fourth proportional to 128,916.86, 177,902.49 and 71,552.83 is: 98,741.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,916.86 : 177,902.49 = 71,552.83 : x
  2. Step 2: Convert to fraction form
    128,916.86/177,902.49 = 71,552.83/x
  3. Step 3: Cross multiply
    128,916.86x = 177,902.49 × 71,552.83
  4. Step 4: Simplify right side
    128,916.86x = 12,729,425,734.03
  5. Step 5: Solve for x
    x = 12,729,425,734.03/128,916.86
  6. Step 6: Final answer
    x = 98,741.36

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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.