Home / 105,170.36-145,133.46-57,422.70

Finding the Fourth Proportional to 105,170.36, 145,133.46 and 57,422.70

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Solution

The fourth proportional to 105,170.36, 145,133.46 and 57,422.70 is: 79,242.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,170.36 : 145,133.46 = 57,422.70 : x
  2. Step 2: Convert to fraction form
    105,170.36/145,133.46 = 57,422.70/x
  3. Step 3: Cross multiply
    105,170.36x = 145,133.46 × 57,422.70
  4. Step 4: Simplify right side
    105,170.36x = 8,333,955,133.54
  5. Step 5: Solve for x
    x = 8,333,955,133.54/105,170.36
  6. Step 6: Final answer
    x = 79,242.43

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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.