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Finding the Fourth Proportional to 141,841.40, 195,745.50 and 81,423.08

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Solution

The fourth proportional to 141,841.40, 195,745.50 and 81,423.08 is: 112,366.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,841.40 : 195,745.50 = 81,423.08 : x
  2. Step 2: Convert to fraction form
    141,841.40/195,745.50 = 81,423.08/x
  3. Step 3: Cross multiply
    141,841.40x = 195,745.50 × 81,423.08
  4. Step 4: Simplify right side
    141,841.40x = 15,938,201,506.14
  5. Step 5: Solve for x
    x = 15,938,201,506.14/141,841.40
  6. Step 6: Final answer
    x = 112,366.36

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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.