Home / 130,228.80-194,954.40-77,611.20

Finding the Fourth Proportional to 130,228.80, 194,954.40 and 77,611.20

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Solution

The fourth proportional to 130,228.80, 194,954.40 and 77,611.20 is: 116,185.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,228.80 : 194,954.40 = 77,611.20 : x
  2. Step 2: Convert to fraction form
    130,228.80/194,954.40 = 77,611.20/x
  3. Step 3: Cross multiply
    130,228.80x = 194,954.40 × 77,611.20
  4. Step 4: Simplify right side
    130,228.80x = 15,130,644,929.28
  5. Step 5: Solve for x
    x = 15,130,644,929.28/130,228.80
  6. Step 6: Final answer
    x = 116,185.09

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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.