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Finding the Fourth Proportional to 130,571.76, 180,174.72 and 76,873.68

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Solution

The fourth proportional to 130,571.76, 180,174.72 and 76,873.68 is: 106,077.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,571.76 : 180,174.72 = 76,873.68 : x
  2. Step 2: Convert to fraction form
    130,571.76/180,174.72 = 76,873.68/x
  3. Step 3: Cross multiply
    130,571.76x = 180,174.72 × 76,873.68
  4. Step 4: Simplify right side
    130,571.76x = 13,850,693,769.37
  5. Step 5: Solve for x
    x = 13,850,693,769.37/130,571.76
  6. Step 6: Final answer
    x = 106,077.25

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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.