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Finding the Fourth Proportional to 145,522.20, 200,832.30 and 81,856.20

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Solution

The fourth proportional to 145,522.20, 200,832.30 and 81,856.20 is: 112,968.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,522.20 : 200,832.30 = 81,856.20 : x
  2. Step 2: Convert to fraction form
    145,522.20/200,832.30 = 81,856.20/x
  3. Step 3: Cross multiply
    145,522.20x = 200,832.30 × 81,856.20
  4. Step 4: Simplify right side
    145,522.20x = 16,439,368,915.26
  5. Step 5: Solve for x
    x = 16,439,368,915.26/145,522.20
  6. Step 6: Final answer
    x = 112,968.12

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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.