Home / 121,515.40-182,193.90-109,073.80

Finding the Fourth Proportional to 121,515.40, 182,193.90 and 109,073.80

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Solution

The fourth proportional to 121,515.40, 182,193.90 and 109,073.80 is: 163,539.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,515.40 : 182,193.90 = 109,073.80 : x
  2. Step 2: Convert to fraction form
    121,515.40/182,193.90 = 109,073.80/x
  3. Step 3: Cross multiply
    121,515.40x = 182,193.90 × 109,073.80
  4. Step 4: Simplify right side
    121,515.40x = 19,872,581,009.82
  5. Step 5: Solve for x
    x = 19,872,581,009.82/121,515.40
  6. Step 6: Final answer
    x = 163,539.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.