Home / 121,528.20-182,292.30-111,905.40

Finding the Fourth Proportional to 121,528.20, 182,292.30 and 111,905.40

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Solution

The fourth proportional to 121,528.20, 182,292.30 and 111,905.40 is: 167,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,528.20 : 182,292.30 = 111,905.40 : x
  2. Step 2: Convert to fraction form
    121,528.20/182,292.30 = 111,905.40/x
  3. Step 3: Cross multiply
    121,528.20x = 182,292.30 × 111,905.40
  4. Step 4: Simplify right side
    121,528.20x = 20,399,492,748.42
  5. Step 5: Solve for x
    x = 20,399,492,748.42/121,528.20
  6. Step 6: Final answer
    x = 167,858.10

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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.