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Finding the Fourth Proportional to 104,555.61, 144,286.41 and 56,809.15

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Solution

The fourth proportional to 104,555.61, 144,286.41 and 56,809.15 is: 78,396.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,555.61 : 144,286.41 = 56,809.15 : x
  2. Step 2: Convert to fraction form
    104,555.61/144,286.41 = 56,809.15/x
  3. Step 3: Cross multiply
    104,555.61x = 144,286.41 × 56,809.15
  4. Step 4: Simplify right side
    104,555.61x = 8,196,788,160.97
  5. Step 5: Solve for x
    x = 8,196,788,160.97/104,555.61
  6. Step 6: Final answer
    x = 78,396.45

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1.5x scale

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.