Home / 149,193.04-205,890.68-81,214.40

Finding the Fourth Proportional to 149,193.04, 205,890.68 and 81,214.40

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Solution

The fourth proportional to 149,193.04, 205,890.68 and 81,214.40 is: 112,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,193.04 : 205,890.68 = 81,214.40 : x
  2. Step 2: Convert to fraction form
    149,193.04/205,890.68 = 81,214.40/x
  3. Step 3: Cross multiply
    149,193.04x = 205,890.68 × 81,214.40
  4. Step 4: Simplify right side
    149,193.04x = 16,721,288,041.79
  5. Step 5: Solve for x
    x = 16,721,288,041.79/149,193.04
  6. Step 6: Final answer
    x = 112,078.20

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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.