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Finding the Fourth Proportional to 100,797.51, 139,042.71 and 63,006.15

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Solution

The fourth proportional to 100,797.51, 139,042.71 and 63,006.15 is: 86,912.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,797.51 : 139,042.71 = 63,006.15 : x
  2. Step 2: Convert to fraction form
    100,797.51/139,042.71 = 63,006.15/x
  3. Step 3: Cross multiply
    100,797.51x = 139,042.71 × 63,006.15
  4. Step 4: Simplify right side
    100,797.51x = 8,760,546,364.08
  5. Step 5: Solve for x
    x = 8,760,546,364.08/100,797.51
  6. Step 6: Final answer
    x = 86,912.33

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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.