Home / 209,118.25-313,501.02-90,700.39

Finding the Fourth Proportional to 209,118.25, 313,501.02 and 90,700.39

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Solution

The fourth proportional to 209,118.25, 313,501.02 and 90,700.39 is: 135,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,118.25 : 313,501.02 = 90,700.39 : x
  2. Step 2: Convert to fraction form
    209,118.25/313,501.02 = 90,700.39/x
  3. Step 3: Cross multiply
    209,118.25x = 313,501.02 × 90,700.39
  4. Step 4: Simplify right side
    209,118.25x = 28,434,664,779.40
  5. Step 5: Solve for x
    x = 28,434,664,779.40/209,118.25
  6. Step 6: Final answer
    x = 135,974.09

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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.