Home / 130,118.40-195,199.20-51,235.20

Finding the Fourth Proportional to 130,118.40, 195,199.20 and 51,235.20

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Solution

The fourth proportional to 130,118.40, 195,199.20 and 51,235.20 is: 76,861.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,118.40 : 195,199.20 = 51,235.20 : x
  2. Step 2: Convert to fraction form
    130,118.40/195,199.20 = 51,235.20/x
  3. Step 3: Cross multiply
    130,118.40x = 195,199.20 × 51,235.20
  4. Step 4: Simplify right side
    130,118.40x = 10,001,070,051.84
  5. Step 5: Solve for x
    x = 10,001,070,051.84/130,118.40
  6. Step 6: Final answer
    x = 76,861.31

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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.