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Finding the Fourth Proportional to 130,873.32, 180,584.04 and 73,509.90

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Solution

The fourth proportional to 130,873.32, 180,584.04 and 73,509.90 is: 101,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,873.32 : 180,584.04 = 73,509.90 : x
  2. Step 2: Convert to fraction form
    130,873.32/180,584.04 = 73,509.90/x
  3. Step 3: Cross multiply
    130,873.32x = 180,584.04 × 73,509.90
  4. Step 4: Simplify right side
    130,873.32x = 13,274,714,722.00
  5. Step 5: Solve for x
    x = 13,274,714,722.00/130,873.32
  6. Step 6: Final answer
    x = 101,431.79

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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.