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Finding the Fourth Proportional to 104,101.78, 143,659.81 and 56,354.78

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Solution

The fourth proportional to 104,101.78, 143,659.81 and 56,354.78 is: 77,769.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,101.78 : 143,659.81 = 56,354.78 : x
  2. Step 2: Convert to fraction form
    104,101.78/143,659.81 = 56,354.78/x
  3. Step 3: Cross multiply
    104,101.78x = 143,659.81 × 56,354.78
  4. Step 4: Simplify right side
    104,101.78x = 8,095,916,987.39
  5. Step 5: Solve for x
    x = 8,095,916,987.39/104,101.78
  6. Step 6: Final answer
    x = 77,769.25

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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.