Home / 105,243.44-145,238.80-57,499.36

Finding the Fourth Proportional to 105,243.44, 145,238.80 and 57,499.36

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Solution

The fourth proportional to 105,243.44, 145,238.80 and 57,499.36 is: 79,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,243.44 : 145,238.80 = 57,499.36 : x
  2. Step 2: Convert to fraction form
    105,243.44/145,238.80 = 57,499.36/x
  3. Step 3: Cross multiply
    105,243.44x = 145,238.80 × 57,499.36
  4. Step 4: Simplify right side
    105,243.44x = 8,351,138,047.17
  5. Step 5: Solve for x
    x = 8,351,138,047.17/105,243.44
  6. Step 6: Final answer
    x = 79,350.68

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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.