Home / 131,693.12-197,151.90-81,612.26

Finding the Fourth Proportional to 131,693.12, 197,151.90 and 81,612.26

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Solution

The fourth proportional to 131,693.12, 197,151.90 and 81,612.26 is: 122,178.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,693.12 : 197,151.90 = 81,612.26 : x
  2. Step 2: Convert to fraction form
    131,693.12/197,151.90 = 81,612.26/x
  3. Step 3: Cross multiply
    131,693.12x = 197,151.90 × 81,612.26
  4. Step 4: Simplify right side
    131,693.12x = 16,090,012,122.29
  5. Step 5: Solve for x
    x = 16,090,012,122.29/131,693.12
  6. Step 6: Final answer
    x = 122,178.08

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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.