Home / 105,431.18-145,498.49-57,683.44

Finding the Fourth Proportional to 105,431.18, 145,498.49 and 57,683.44

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Solution

The fourth proportional to 105,431.18, 145,498.49 and 57,683.44 is: 79,605.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,431.18 : 145,498.49 = 57,683.44 : x
  2. Step 2: Convert to fraction form
    105,431.18/145,498.49 = 57,683.44/x
  3. Step 3: Cross multiply
    105,431.18x = 145,498.49 × 57,683.44
  4. Step 4: Simplify right side
    105,431.18x = 8,392,853,418.01
  5. Step 5: Solve for x
    x = 8,392,853,418.01/105,431.18
  6. Step 6: Final answer
    x = 79,605.04

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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.