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Finding the Fourth Proportional to 119,136.79, 164,409.91 and 65,422.93

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Solution

The fourth proportional to 119,136.79, 164,409.91 and 65,422.93 is: 90,284.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,136.79 : 164,409.91 = 65,422.93 : x
  2. Step 2: Convert to fraction form
    119,136.79/164,409.91 = 65,422.93/x
  3. Step 3: Cross multiply
    119,136.79x = 164,409.91 × 65,422.93
  4. Step 4: Simplify right side
    119,136.79x = 10,756,177,458.65
  5. Step 5: Solve for x
    x = 10,756,177,458.65/119,136.79
  6. Step 6: Final answer
    x = 90,284.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.