Home / 209,780.39-289,497.31-119,136.34

Finding the Fourth Proportional to 209,780.39, 289,497.31 and 119,136.34

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Solution

The fourth proportional to 209,780.39, 289,497.31 and 119,136.34 is: 164,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,780.39 : 289,497.31 = 119,136.34 : x
  2. Step 2: Convert to fraction form
    209,780.39/289,497.31 = 119,136.34/x
  3. Step 3: Cross multiply
    209,780.39x = 289,497.31 × 119,136.34
  4. Step 4: Simplify right side
    209,780.39x = 34,489,648,931.66
  5. Step 5: Solve for x
    x = 34,489,648,931.66/209,780.39
  6. Step 6: Final answer
    x = 164,408.35

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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.