Home / 105,390.22-145,441.96-57,643.57

Finding the Fourth Proportional to 105,390.22, 145,441.96 and 57,643.57

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Solution

The fourth proportional to 105,390.22, 145,441.96 and 57,643.57 is: 79,550.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,390.22 : 145,441.96 = 57,643.57 : x
  2. Step 2: Convert to fraction form
    105,390.22/145,441.96 = 57,643.57/x
  3. Step 3: Cross multiply
    105,390.22x = 145,441.96 × 57,643.57
  4. Step 4: Simplify right side
    105,390.22x = 8,383,793,294.48
  5. Step 5: Solve for x
    x = 8,383,793,294.48/105,390.22
  6. Step 6: Final answer
    x = 79,550.01

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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.