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Finding the Fourth Proportional to 119,136.96, 178,746.96 and 79,315.92

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Solution

The fourth proportional to 119,136.96, 178,746.96 and 79,315.92 is: 119,001.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,136.96 : 178,746.96 = 79,315.92 : x
  2. Step 2: Convert to fraction form
    119,136.96/178,746.96 = 79,315.92/x
  3. Step 3: Cross multiply
    119,136.96x = 178,746.96 × 79,315.92
  4. Step 4: Simplify right side
    119,136.96x = 14,177,479,579.60
  5. Step 5: Solve for x
    x = 14,177,479,579.60/119,136.96
  6. Step 6: Final answer
    x = 119,001.52

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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.