Home / 209,127.96-313,515.60-90,710.16

Finding the Fourth Proportional to 209,127.96, 313,515.60 and 90,710.16

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Solution

The fourth proportional to 209,127.96, 313,515.60 and 90,710.16 is: 135,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,127.96 : 313,515.60 = 90,710.16 : x
  2. Step 2: Convert to fraction form
    209,127.96/313,515.60 = 90,710.16/x
  3. Step 3: Cross multiply
    209,127.96x = 313,515.60 × 90,710.16
  4. Step 4: Simplify right side
    209,127.96x = 28,439,050,238.50
  5. Step 5: Solve for x
    x = 28,439,050,238.50/209,127.96
  6. Step 6: Final answer
    x = 135,988.75

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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.