Home / 105,685.11-145,844.22-57,938.46

Finding the Fourth Proportional to 105,685.11, 145,844.22 and 57,938.46

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Solution

The fourth proportional to 105,685.11, 145,844.22 and 57,938.46 is: 79,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,685.11 : 145,844.22 = 57,938.46 : x
  2. Step 2: Convert to fraction form
    105,685.11/145,844.22 = 57,938.46/x
  3. Step 3: Cross multiply
    105,685.11x = 145,844.22 × 57,938.46
  4. Step 4: Simplify right side
    105,685.11x = 8,449,989,506.70
  5. Step 5: Solve for x
    x = 8,449,989,506.70/105,685.11
  6. Step 6: Final answer
    x = 79,954.40

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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.