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Finding the Fourth Proportional to 103,299.42, 142,623.63 and 69,358.62

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Solution

The fourth proportional to 103,299.42, 142,623.63 and 69,358.62 is: 95,762.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,299.42 : 142,623.63 = 69,358.62 : x
  2. Step 2: Convert to fraction form
    103,299.42/142,623.63 = 69,358.62/x
  3. Step 3: Cross multiply
    103,299.42x = 142,623.63 × 69,358.62
  4. Step 4: Simplify right side
    103,299.42x = 9,892,178,156.19
  5. Step 5: Solve for x
    x = 9,892,178,156.19/103,299.42
  6. Step 6: Final answer
    x = 95,762.18

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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.