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Finding the Fourth Proportional to 141,969.40, 212,954.10 and 120,860.80

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Solution

The fourth proportional to 141,969.40, 212,954.10 and 120,860.80 is: 181,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,969.40 : 212,954.10 = 120,860.80 : x
  2. Step 2: Convert to fraction form
    141,969.40/212,954.10 = 120,860.80/x
  3. Step 3: Cross multiply
    141,969.40x = 212,954.10 × 120,860.80
  4. Step 4: Simplify right side
    141,969.40x = 25,737,802,889.28
  5. Step 5: Solve for x
    x = 25,737,802,889.28/141,969.40
  6. Step 6: Final answer
    x = 181,291.20

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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.