Home / 102,107.28-140,892.84-57,386.64

Finding the Fourth Proportional to 102,107.28, 140,892.84 and 57,386.64

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Solution

The fourth proportional to 102,107.28, 140,892.84 and 57,386.64 is: 79,185.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,107.28 : 140,892.84 = 57,386.64 : x
  2. Step 2: Convert to fraction form
    102,107.28/140,892.84 = 57,386.64/x
  3. Step 3: Cross multiply
    102,107.28x = 140,892.84 × 57,386.64
  4. Step 4: Simplify right side
    102,107.28x = 8,085,366,687.66
  5. Step 5: Solve for x
    x = 8,085,366,687.66/102,107.28
  6. Step 6: Final answer
    x = 79,185.02

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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.