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Finding the Fourth Proportional to 104,313.72, 143,889.30 and 77,062.08

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Solution

The fourth proportional to 104,313.72, 143,889.30 and 77,062.08 is: 106,298.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,313.72 : 143,889.30 = 77,062.08 : x
  2. Step 2: Convert to fraction form
    104,313.72/143,889.30 = 77,062.08/x
  3. Step 3: Cross multiply
    104,313.72x = 143,889.30 × 77,062.08
  4. Step 4: Simplify right side
    104,313.72x = 11,088,408,747.74
  5. Step 5: Solve for x
    x = 11,088,408,747.74/104,313.72
  6. Step 6: Final answer
    x = 106,298.66

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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.