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Finding the Fourth Proportional to 158,492.10, 218,741.50 and 98,082.20

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Solution

The fourth proportional to 158,492.10, 218,741.50 and 98,082.20 is: 135,367.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,492.10 : 218,741.50 = 98,082.20 : x
  2. Step 2: Convert to fraction form
    158,492.10/218,741.50 = 98,082.20/x
  3. Step 3: Cross multiply
    158,492.10x = 218,741.50 × 98,082.20
  4. Step 4: Simplify right side
    158,492.10x = 21,454,647,551.30
  5. Step 5: Solve for x
    x = 21,454,647,551.30/158,492.10
  6. Step 6: Final answer
    x = 135,367.30

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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.