Home / 141,976.80-195,955.20-85,406.40

Finding the Fourth Proportional to 141,976.80, 195,955.20 and 85,406.40

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Solution

The fourth proportional to 141,976.80, 195,955.20 and 85,406.40 is: 117,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,976.80 : 195,955.20 = 85,406.40 : x
  2. Step 2: Convert to fraction form
    141,976.80/195,955.20 = 85,406.40/x
  3. Step 3: Cross multiply
    141,976.80x = 195,955.20 × 85,406.40
  4. Step 4: Simplify right side
    141,976.80x = 16,735,828,193.28
  5. Step 5: Solve for x
    x = 16,735,828,193.28/141,976.80
  6. Step 6: Final answer
    x = 117,877.20

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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.