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Finding the Fourth Proportional to 103,151.63, 154,529.79 and 69,814.19

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Solution

The fourth proportional to 103,151.63, 154,529.79 and 69,814.19 is: 104,587.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,151.63 : 154,529.79 = 69,814.19 : x
  2. Step 2: Convert to fraction form
    103,151.63/154,529.79 = 69,814.19/x
  3. Step 3: Cross multiply
    103,151.63x = 154,529.79 × 69,814.19
  4. Step 4: Simplify right side
    103,151.63x = 10,788,371,347.07
  5. Step 5: Solve for x
    x = 10,788,371,347.07/103,151.63
  6. Step 6: Final answer
    x = 104,587.51

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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.