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Finding the Fourth Proportional to 104,502.08, 144,129.48 and 68,728.82

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Solution

The fourth proportional to 104,502.08, 144,129.48 and 68,728.82 is: 94,790.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,502.08 : 144,129.48 = 68,728.82 : x
  2. Step 2: Convert to fraction form
    104,502.08/144,129.48 = 68,728.82/x
  3. Step 3: Cross multiply
    104,502.08x = 144,129.48 × 68,728.82
  4. Step 4: Simplify right side
    104,502.08x = 9,905,849,087.61
  5. Step 5: Solve for x
    x = 9,905,849,087.61/104,502.08
  6. Step 6: Final answer
    x = 94,790.93

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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.