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Finding the Fourth Proportional to 98,827.72, 136,404.66 and 77,274.83

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Solution

The fourth proportional to 98,827.72, 136,404.66 and 77,274.83 is: 106,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,827.72 : 136,404.66 = 77,274.83 : x
  2. Step 2: Convert to fraction form
    98,827.72/136,404.66 = 77,274.83/x
  3. Step 3: Cross multiply
    98,827.72x = 136,404.66 × 77,274.83
  4. Step 4: Simplify right side
    98,827.72x = 10,540,646,912.71
  5. Step 5: Solve for x
    x = 10,540,646,912.71/98,827.72
  6. Step 6: Final answer
    x = 106,656.79

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1.5x scale

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.