Home / 130,571.28-179,014.89-128,209.32

Finding the Fourth Proportional to 130,571.28, 179,014.89 and 128,209.32

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Solution

The fourth proportional to 130,571.28, 179,014.89 and 128,209.32 is: 175,776.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,571.28 : 179,014.89 = 128,209.32 : x
  2. Step 2: Convert to fraction form
    130,571.28/179,014.89 = 128,209.32/x
  3. Step 3: Cross multiply
    130,571.28x = 179,014.89 × 128,209.32
  4. Step 4: Simplify right side
    130,571.28x = 22,951,377,316.77
  5. Step 5: Solve for x
    x = 22,951,377,316.77/130,571.28
  6. Step 6: Final answer
    x = 175,776.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.