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Finding the Fourth Proportional to 170,992.11, 256,492.52 and 81,013.73

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Solution

The fourth proportional to 170,992.11, 256,492.52 and 81,013.73 is: 121,522.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,992.11 : 256,492.52 = 81,013.73 : x
  2. Step 2: Convert to fraction form
    170,992.11/256,492.52 = 81,013.73/x
  3. Step 3: Cross multiply
    170,992.11x = 256,492.52 × 81,013.73
  4. Step 4: Simplify right side
    170,992.11x = 20,779,415,762.30
  5. Step 5: Solve for x
    x = 20,779,415,762.30/170,992.11
  6. Step 6: Final answer
    x = 121,522.66

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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.