Home / 128,019,957.89-176,665,661.73-71,505,528.56

Finding the Fourth Proportional to 128,019,957.89, 176,665,661.73 and 71,505,528.56

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Solution

The fourth proportional to 128,019,957.89, 176,665,661.73 and 71,505,528.56 is: 98,676,579.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,019,957.89 : 176,665,661.73 = 71,505,528.56 : x
  2. Step 2: Convert to fraction form
    128,019,957.89/176,665,661.73 = 71,505,528.56/x
  3. Step 3: Cross multiply
    128,019,957.89x = 176,665,661.73 × 71,505,528.56
  4. Step 4: Simplify right side
    128,019,957.89x = 12,632,571,520,184,982
  5. Step 5: Solve for x
    x = 12,632,571,520,184,982/128,019,957.89
  6. Step 6: Final answer
    x = 98,676,579.25

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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.