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Finding the Fourth Proportional to 103,161.43, 154,785.90 and 56,359.63

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Solution

The fourth proportional to 103,161.43, 154,785.90 and 56,359.63 is: 84,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,161.43 : 154,785.90 = 56,359.63 : x
  2. Step 2: Convert to fraction form
    103,161.43/154,785.90 = 56,359.63/x
  3. Step 3: Cross multiply
    103,161.43x = 154,785.90 × 56,359.63
  4. Step 4: Simplify right side
    103,161.43x = 8,723,676,053.22
  5. Step 5: Solve for x
    x = 8,723,676,053.22/103,161.43
  6. Step 6: Final answer
    x = 84,563.35

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1.5x scale

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.