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Finding the Fourth Proportional to 190,339.62, 262,549.74 and 122,445

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Solution

The fourth proportional to 190,339.62, 262,549.74 and 122,445 is: 168,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,339.62 : 262,549.74 = 122,445 : x
  2. Step 2: Convert to fraction form
    190,339.62/262,549.74 = 122,445/x
  3. Step 3: Cross multiply
    190,339.62x = 262,549.74 × 122,445
  4. Step 4: Simplify right side
    190,339.62x = 32,147,902,914.30
  5. Step 5: Solve for x
    x = 32,147,902,914.30/190,339.62
  6. Step 6: Final answer
    x = 168,897.59

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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.