Home / 105,253.28-145,247.81-57,505.60

Finding the Fourth Proportional to 105,253.28, 145,247.81 and 57,505.60

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Solution

The fourth proportional to 105,253.28, 145,247.81 and 57,505.60 is: 79,356.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,253.28 : 145,247.81 = 57,505.60 : x
  2. Step 2: Convert to fraction form
    105,253.28/145,247.81 = 57,505.60/x
  3. Step 3: Cross multiply
    105,253.28x = 145,247.81 × 57,505.60
  4. Step 4: Simplify right side
    105,253.28x = 8,352,562,462.74
  5. Step 5: Solve for x
    x = 8,352,562,462.74/105,253.28
  6. Step 6: Final answer
    x = 79,356.79

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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.