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Finding the Fourth Proportional to 106,668.69, 147,122.94 and 74,404.95

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Solution

The fourth proportional to 106,668.69, 147,122.94 and 74,404.95 is: 102,623.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,668.69 : 147,122.94 = 74,404.95 : x
  2. Step 2: Convert to fraction form
    106,668.69/147,122.94 = 74,404.95/x
  3. Step 3: Cross multiply
    106,668.69x = 147,122.94 × 74,404.95
  4. Step 4: Simplify right side
    106,668.69x = 10,946,674,994.55
  5. Step 5: Solve for x
    x = 10,946,674,994.55/106,668.69
  6. Step 6: Final answer
    x = 102,623.13

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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.