Home / 209,549.61-289,184.72-129,023.59

Finding the Fourth Proportional to 209,549.61, 289,184.72 and 129,023.59

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Solution

The fourth proportional to 209,549.61, 289,184.72 and 129,023.59 is: 178,056.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,549.61 : 289,184.72 = 129,023.59 : x
  2. Step 2: Convert to fraction form
    209,549.61/289,184.72 = 129,023.59/x
  3. Step 3: Cross multiply
    209,549.61x = 289,184.72 × 129,023.59
  4. Step 4: Simplify right side
    209,549.61x = 37,311,650,747.54
  5. Step 5: Solve for x
    x = 37,311,650,747.54/209,549.61
  6. Step 6: Final answer
    x = 178,056.41

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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.