Home / 105,640.66-145,784.10-57,895.12

Finding the Fourth Proportional to 105,640.66, 145,784.10 and 57,895.12

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Solution

The fourth proportional to 105,640.66, 145,784.10 and 57,895.12 is: 79,895.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,640.66 : 145,784.10 = 57,895.12 : x
  2. Step 2: Convert to fraction form
    105,640.66/145,784.10 = 57,895.12/x
  3. Step 3: Cross multiply
    105,640.66x = 145,784.10 × 57,895.12
  4. Step 4: Simplify right side
    105,640.66x = 8,440,187,963.59
  5. Step 5: Solve for x
    x = 8,440,187,963.59/105,640.66
  6. Step 6: Final answer
    x = 79,895.26

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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.