Home / 128,460,783.75-177,276,076.38-69,723,470.33

Finding the Fourth Proportional to 128,460,783.75, 177,276,076.38 and 69,723,470.33

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Solution

The fourth proportional to 128,460,783.75, 177,276,076.38 and 69,723,470.33 is: 96,218,494.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,460,783.75 : 177,276,076.38 = 69,723,470.33 : x
  2. Step 2: Convert to fraction form
    128,460,783.75/177,276,076.38 = 69,723,470.33/x
  3. Step 3: Cross multiply
    128,460,783.75x = 177,276,076.38 × 69,723,470.33
  4. Step 4: Simplify right side
    128,460,783.75x = 12,360,303,251,699,744
  5. Step 5: Solve for x
    x = 12,360,303,251,699,744/128,460,783.75
  6. Step 6: Final answer
    x = 96,218,494.79

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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.