Home / 130,208.40-195,312.60-109,213.20

Finding the Fourth Proportional to 130,208.40, 195,312.60 and 109,213.20

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Solution

The fourth proportional to 130,208.40, 195,312.60 and 109,213.20 is: 163,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,208.40 : 195,312.60 = 109,213.20 : x
  2. Step 2: Convert to fraction form
    130,208.40/195,312.60 = 109,213.20/x
  3. Step 3: Cross multiply
    130,208.40x = 195,312.60 × 109,213.20
  4. Step 4: Simplify right side
    130,208.40x = 21,330,714,046.32
  5. Step 5: Solve for x
    x = 21,330,714,046.32/130,208.40
  6. Step 6: Final answer
    x = 163,819.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.