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Finding the Fourth Proportional to 170,609.07, 255,706.07 and 120,703.55

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Solution

The fourth proportional to 170,609.07, 255,706.07 and 120,703.55 is: 180,908.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,609.07 : 255,706.07 = 120,703.55 : x
  2. Step 2: Convert to fraction form
    170,609.07/255,706.07 = 120,703.55/x
  3. Step 3: Cross multiply
    170,609.07x = 255,706.07 × 120,703.55
  4. Step 4: Simplify right side
    170,609.07x = 30,864,630,405.55
  5. Step 5: Solve for x
    x = 30,864,630,405.55/170,609.07
  6. Step 6: Final answer
    x = 180,908.50

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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.