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Finding the Fourth Proportional to 112,773.71, 155,620.43 and 61,786.37

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Solution

The fourth proportional to 112,773.71, 155,620.43 and 61,786.37 is: 85,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,773.71 : 155,620.43 = 61,786.37 : x
  2. Step 2: Convert to fraction form
    112,773.71/155,620.43 = 61,786.37/x
  3. Step 3: Cross multiply
    112,773.71x = 155,620.43 × 61,786.37
  4. Step 4: Simplify right side
    112,773.71x = 9,615,222,011.06
  5. Step 5: Solve for x
    x = 9,615,222,011.06/112,773.71
  6. Step 6: Final answer
    x = 85,261.20

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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.