Home / 105,098.20-145,032.78-57,352.12

Finding the Fourth Proportional to 105,098.20, 145,032.78 and 57,352.12

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Solution

The fourth proportional to 105,098.20, 145,032.78 and 57,352.12 is: 79,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,098.20 : 145,032.78 = 57,352.12 : x
  2. Step 2: Convert to fraction form
    105,098.20/145,032.78 = 57,352.12/x
  3. Step 3: Cross multiply
    105,098.20x = 145,032.78 × 57,352.12
  4. Step 4: Simplify right side
    105,098.20x = 8,317,937,402.49
  5. Step 5: Solve for x
    x = 8,317,937,402.49/105,098.20
  6. Step 6: Final answer
    x = 79,144.43

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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.