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Finding the Fourth Proportional to 138,297.42, 190,477.71 and 119,401.74

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Solution

The fourth proportional to 138,297.42, 190,477.71 and 119,401.74 is: 164,452.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,297.42 : 190,477.71 = 119,401.74 : x
  2. Step 2: Convert to fraction form
    138,297.42/190,477.71 = 119,401.74/x
  3. Step 3: Cross multiply
    138,297.42x = 190,477.71 × 119,401.74
  4. Step 4: Simplify right side
    138,297.42x = 22,743,370,005.22
  5. Step 5: Solve for x
    x = 22,743,370,005.22/138,297.42
  6. Step 6: Final answer
    x = 164,452.60

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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.