Home / 209,235.04-313,675.60-90,817.36

Finding the Fourth Proportional to 209,235.04, 313,675.60 and 90,817.36

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Solution

The fourth proportional to 209,235.04, 313,675.60 and 90,817.36 is: 136,149.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,235.04 : 313,675.60 = 90,817.36 : x
  2. Step 2: Convert to fraction form
    209,235.04/313,675.60 = 90,817.36/x
  3. Step 3: Cross multiply
    209,235.04x = 313,675.60 × 90,817.36
  4. Step 4: Simplify right side
    209,235.04x = 28,487,189,888.42
  5. Step 5: Solve for x
    x = 28,487,189,888.42/209,235.04
  6. Step 6: Final answer
    x = 136,149.23

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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.