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Finding the Fourth Proportional to 160,085.57, 240,119.64 and 81,197.73

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Solution

The fourth proportional to 160,085.57, 240,119.64 and 81,197.73 is: 121,792.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,085.57 : 240,119.64 = 81,197.73 : x
  2. Step 2: Convert to fraction form
    160,085.57/240,119.64 = 81,197.73/x
  3. Step 3: Cross multiply
    160,085.57x = 240,119.64 × 81,197.73
  4. Step 4: Simplify right side
    160,085.57x = 19,497,169,696.42
  5. Step 5: Solve for x
    x = 19,497,169,696.42/160,085.57
  6. Step 6: Final answer
    x = 121,792.18

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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.