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Finding the Fourth Proportional to 117,041.78, 161,473.95 and 76,777.89

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Solution

The fourth proportional to 117,041.78, 161,473.95 and 76,777.89 is: 105,924.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,041.78 : 161,473.95 = 76,777.89 : x
  2. Step 2: Convert to fraction form
    117,041.78/161,473.95 = 76,777.89/x
  3. Step 3: Cross multiply
    117,041.78x = 161,473.95 × 76,777.89
  4. Step 4: Simplify right side
    117,041.78x = 12,397,629,170.97
  5. Step 5: Solve for x
    x = 12,397,629,170.97/117,041.78
  6. Step 6: Final answer
    x = 105,924.82

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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.