Home / 130,987.46-196,185.79-91,719.88

Finding the Fourth Proportional to 130,987.46, 196,185.79 and 91,719.88

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Solution

The fourth proportional to 130,987.46, 196,185.79 and 91,719.88 is: 137,372.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,987.46 : 196,185.79 = 91,719.88 : x
  2. Step 2: Convert to fraction form
    130,987.46/196,185.79 = 91,719.88/x
  3. Step 3: Cross multiply
    130,987.46x = 196,185.79 × 91,719.88
  4. Step 4: Simplify right side
    130,987.46x = 17,994,137,116.51
  5. Step 5: Solve for x
    x = 17,994,137,116.51/130,987.46
  6. Step 6: Final answer
    x = 137,372.98

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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.