Home / 136,771.12-205,154.55-70,172.82

Finding the Fourth Proportional to 136,771.12, 205,154.55 and 70,172.82

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Solution

The fourth proportional to 136,771.12, 205,154.55 and 70,172.82 is: 105,258.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,771.12 : 205,154.55 = 70,172.82 : x
  2. Step 2: Convert to fraction form
    136,771.12/205,154.55 = 70,172.82/x
  3. Step 3: Cross multiply
    136,771.12x = 205,154.55 × 70,172.82
  4. Step 4: Simplify right side
    136,771.12x = 14,396,273,309.33
  5. Step 5: Solve for x
    x = 14,396,273,309.33/136,771.12
  6. Step 6: Final answer
    x = 105,258.14

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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.