Home / 130,968.56-196,451.40-78,392.72

Finding the Fourth Proportional to 130,968.56, 196,451.40 and 78,392.72

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Solution

The fourth proportional to 130,968.56, 196,451.40 and 78,392.72 is: 117,588.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,968.56 : 196,451.40 = 78,392.72 : x
  2. Step 2: Convert to fraction form
    130,968.56/196,451.40 = 78,392.72/x
  3. Step 3: Cross multiply
    130,968.56x = 196,451.40 × 78,392.72
  4. Step 4: Simplify right side
    130,968.56x = 15,400,359,593.81
  5. Step 5: Solve for x
    x = 15,400,359,593.81/130,968.56
  6. Step 6: Final answer
    x = 117,588.22

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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.