Home / 141,003.20-211,504.80-81,808.40

Finding the Fourth Proportional to 141,003.20, 211,504.80 and 81,808.40

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Solution

The fourth proportional to 141,003.20, 211,504.80 and 81,808.40 is: 122,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,003.20 : 211,504.80 = 81,808.40 : x
  2. Step 2: Convert to fraction form
    141,003.20/211,504.80 = 81,808.40/x
  3. Step 3: Cross multiply
    141,003.20x = 211,504.80 × 81,808.40
  4. Step 4: Simplify right side
    141,003.20x = 17,302,869,280.32
  5. Step 5: Solve for x
    x = 17,302,869,280.32/141,003.20
  6. Step 6: Final answer
    x = 122,712.60

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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.