Home / 105,173.37-145,139.43-57,425.70

Finding the Fourth Proportional to 105,173.37, 145,139.43 and 57,425.70

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Solution

The fourth proportional to 105,173.37, 145,139.43 and 57,425.70 is: 79,247.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,173.37 : 145,139.43 = 57,425.70 : x
  2. Step 2: Convert to fraction form
    105,173.37/145,139.43 = 57,425.70/x
  3. Step 3: Cross multiply
    105,173.37x = 145,139.43 × 57,425.70
  4. Step 4: Simplify right side
    105,173.37x = 8,334,733,365.35
  5. Step 5: Solve for x
    x = 8,334,733,365.35/105,173.37
  6. Step 6: Final answer
    x = 79,247.56

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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.