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Finding the Fourth Proportional to 103,160.43, 154,784.40 and 56,358.63

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Solution

The fourth proportional to 103,160.43, 154,784.40 and 56,358.63 is: 84,561.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,160.43 : 154,784.40 = 56,358.63 : x
  2. Step 2: Convert to fraction form
    103,160.43/154,784.40 = 56,358.63/x
  3. Step 3: Cross multiply
    103,160.43x = 154,784.40 × 56,358.63
  4. Step 4: Simplify right side
    103,160.43x = 8,723,436,729.37
  5. Step 5: Solve for x
    x = 8,723,436,729.37/103,160.43
  6. Step 6: Final answer
    x = 84,561.85

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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.