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Finding the Fourth Proportional to 199,854.72, 299,643.84 and 87,480.96

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Solution

The fourth proportional to 199,854.72, 299,643.84 and 87,480.96 is: 131,160.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,854.72 : 299,643.84 = 87,480.96 : x
  2. Step 2: Convert to fraction form
    199,854.72/299,643.84 = 87,480.96/x
  3. Step 3: Cross multiply
    199,854.72x = 299,643.84 × 87,480.96
  4. Step 4: Simplify right side
    199,854.72x = 26,213,130,781.29
  5. Step 5: Solve for x
    x = 26,213,130,781.29/199,854.72
  6. Step 6: Final answer
    x = 131,160.93

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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.