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Finding the Fourth Proportional to 98,906.40, 136,490.64 and 53,585.51

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Solution

The fourth proportional to 98,906.40, 136,490.64 and 53,585.51 is: 73,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,906.40 : 136,490.64 = 53,585.51 : x
  2. Step 2: Convert to fraction form
    98,906.40/136,490.64 = 53,585.51/x
  3. Step 3: Cross multiply
    98,906.40x = 136,490.64 × 53,585.51
  4. Step 4: Simplify right side
    98,906.40x = 7,313,920,895.85
  5. Step 5: Solve for x
    x = 7,313,920,895.85/98,906.40
  6. Step 6: Final answer
    x = 73,947.90

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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.