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Finding the Fourth Proportional to 99,207.83, 136,907.81 and 53,886.70

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Solution

The fourth proportional to 99,207.83, 136,907.81 and 53,886.70 is: 74,364.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,207.83 : 136,907.81 = 53,886.70 : x
  2. Step 2: Convert to fraction form
    99,207.83/136,907.81 = 53,886.70/x
  3. Step 3: Cross multiply
    99,207.83x = 136,907.81 × 53,886.70
  4. Step 4: Simplify right side
    99,207.83x = 7,377,510,188.90
  5. Step 5: Solve for x
    x = 7,377,510,188.90/99,207.83
  6. Step 6: Final answer
    x = 74,364.19

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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.