Home / 209,118.61-313,501.57-90,700.76

Finding the Fourth Proportional to 209,118.61, 313,501.57 and 90,700.76

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Solution

The fourth proportional to 209,118.61, 313,501.57 and 90,700.76 is: 135,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,118.61 : 313,501.57 = 90,700.76 : x
  2. Step 2: Convert to fraction form
    209,118.61/313,501.57 = 90,700.76/x
  3. Step 3: Cross multiply
    209,118.61x = 313,501.57 × 90,700.76
  4. Step 4: Simplify right side
    209,118.61x = 28,434,830,660.19
  5. Step 5: Solve for x
    x = 28,434,830,660.19/209,118.61
  6. Step 6: Final answer
    x = 135,974.65

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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.