Home / 130,136.52-194,832.90-121,869.72

Finding the Fourth Proportional to 130,136.52, 194,832.90 and 121,869.72

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Solution

The fourth proportional to 130,136.52, 194,832.90 and 121,869.72 is: 182,456.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,136.52 : 194,832.90 = 121,869.72 : x
  2. Step 2: Convert to fraction form
    130,136.52/194,832.90 = 121,869.72/x
  3. Step 3: Cross multiply
    130,136.52x = 194,832.90 × 121,869.72
  4. Step 4: Simplify right side
    130,136.52x = 23,744,230,969.79
  5. Step 5: Solve for x
    x = 23,744,230,969.79/130,136.52
  6. Step 6: Final answer
    x = 182,456.32

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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.