Home / 128,350,734.89-177,128,023.62-72,595,064.28

Finding the Fourth Proportional to 128,350,734.89, 177,128,023.62 and 72,595,064.28

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Solution

The fourth proportional to 128,350,734.89, 177,128,023.62 and 72,595,064.28 is: 100,183,456.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,350,734.89 : 177,128,023.62 = 72,595,064.28 : x
  2. Step 2: Convert to fraction form
    128,350,734.89/177,128,023.62 = 72,595,064.28/x
  3. Step 3: Cross multiply
    128,350,734.89x = 177,128,023.62 × 72,595,064.28
  4. Step 4: Simplify right side
    128,350,734.89x = 12,858,620,260,483,258
  5. Step 5: Solve for x
    x = 12,858,620,260,483,258/128,350,734.89
  6. Step 6: Final answer
    x = 100,183,456.46

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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.