Home / 128,847.54-177,809.27-72,260.13

Finding the Fourth Proportional to 128,847.54, 177,809.27 and 72,260.13

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Solution

The fourth proportional to 128,847.54, 177,809.27 and 72,260.13 is: 99,718.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,847.54 : 177,809.27 = 72,260.13 : x
  2. Step 2: Convert to fraction form
    128,847.54/177,809.27 = 72,260.13/x
  3. Step 3: Cross multiply
    128,847.54x = 177,809.27 × 72,260.13
  4. Step 4: Simplify right side
    128,847.54x = 12,848,520,604.10
  5. Step 5: Solve for x
    x = 12,848,520,604.10/128,847.54
  6. Step 6: Final answer
    x = 99,718.79

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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.