Home / 105,619.26-145,754.56-57,874.40

Finding the Fourth Proportional to 105,619.26, 145,754.56 and 57,874.40

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Solution

The fourth proportional to 105,619.26, 145,754.56 and 57,874.40 is: 79,866.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,619.26 : 145,754.56 = 57,874.40 : x
  2. Step 2: Convert to fraction form
    105,619.26/145,754.56 = 57,874.40/x
  3. Step 3: Cross multiply
    105,619.26x = 145,754.56 × 57,874.40
  4. Step 4: Simplify right side
    105,619.26x = 8,435,457,707.26
  5. Step 5: Solve for x
    x = 8,435,457,707.26/105,619.26
  6. Step 6: Final answer
    x = 79,866.66

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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.