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Finding the Fourth Proportional to 103,449.93, 154,959.61 and 99,881.07

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Solution

The fourth proportional to 103,449.93, 154,959.61 and 99,881.07 is: 149,613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,449.93 : 154,959.61 = 99,881.07 : x
  2. Step 2: Convert to fraction form
    103,449.93/154,959.61 = 99,881.07/x
  3. Step 3: Cross multiply
    103,449.93x = 154,959.61 × 99,881.07
  4. Step 4: Simplify right side
    103,449.93x = 15,477,531,653.58
  5. Step 5: Solve for x
    x = 15,477,531,653.58/103,449.93
  6. Step 6: Final answer
    x = 149,613.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.