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Finding the Fourth Proportional to 130,955.87, 196,269.46 and 55,987.90

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Solution

The fourth proportional to 130,955.87, 196,269.46 and 55,987.90 is: 83,911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,955.87 : 196,269.46 = 55,987.90 : x
  2. Step 2: Convert to fraction form
    130,955.87/196,269.46 = 55,987.90/x
  3. Step 3: Cross multiply
    130,955.87x = 196,269.46 × 55,987.90
  4. Step 4: Simplify right side
    130,955.87x = 10,988,714,899.53
  5. Step 5: Solve for x
    x = 10,988,714,899.53/130,955.87
  6. Step 6: Final answer
    x = 83,911.59

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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.