Home / 148,977.18-205,588.53-81,909.18

Finding the Fourth Proportional to 148,977.18, 205,588.53 and 81,909.18

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Solution

The fourth proportional to 148,977.18, 205,588.53 and 81,909.18 is: 113,034.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,977.18 : 205,588.53 = 81,909.18 : x
  2. Step 2: Convert to fraction form
    148,977.18/205,588.53 = 81,909.18/x
  3. Step 3: Cross multiply
    148,977.18x = 205,588.53 × 81,909.18
  4. Step 4: Simplify right side
    148,977.18x = 16,839,587,909.71
  5. Step 5: Solve for x
    x = 16,839,587,909.71/148,977.18
  6. Step 6: Final answer
    x = 113,034.68

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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.