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Finding the Fourth Proportional to 99,129.66, 136,799.03 and 53,807.63

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Solution

The fourth proportional to 99,129.66, 136,799.03 and 53,807.63 is: 74,254.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,129.66 : 136,799.03 = 53,807.63 : x
  2. Step 2: Convert to fraction form
    99,129.66/136,799.03 = 53,807.63/x
  3. Step 3: Cross multiply
    99,129.66x = 136,799.03 × 53,807.63
  4. Step 4: Simplify right side
    99,129.66x = 7,360,832,067.12
  5. Step 5: Solve for x
    x = 7,360,832,067.12/99,129.66
  6. Step 6: Final answer
    x = 74,254.59

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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.