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Finding the Fourth Proportional to 140,076.71, 193,315 and 79,652.99

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Solution

The fourth proportional to 140,076.71, 193,315 and 79,652.99 is: 109,926.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,076.71 : 193,315 = 79,652.99 : x
  2. Step 2: Convert to fraction form
    140,076.71/193,315 = 79,652.99/x
  3. Step 3: Cross multiply
    140,076.71x = 193,315 × 79,652.99
  4. Step 4: Simplify right side
    140,076.71x = 15,398,116,795.28
  5. Step 5: Solve for x
    x = 15,398,116,795.28/140,076.71
  6. Step 6: Final answer
    x = 109,926.32

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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.