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Finding the Fourth Proportional to 199,139.40, 299,054.70 and 105,827.40

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Solution

The fourth proportional to 199,139.40, 299,054.70 and 105,827.40 is: 158,924.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,139.40 : 299,054.70 = 105,827.40 : x
  2. Step 2: Convert to fraction form
    199,139.40/299,054.70 = 105,827.40/x
  3. Step 3: Cross multiply
    199,139.40x = 299,054.70 × 105,827.40
  4. Step 4: Simplify right side
    199,139.40x = 31,648,181,358.78
  5. Step 5: Solve for x
    x = 31,648,181,358.78/199,139.40
  6. Step 6: Final answer
    x = 158,924.76

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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.