Home / 170,187.95-255,439.53-86,007.35

Finding the Fourth Proportional to 170,187.95, 255,439.53 and 86,007.35

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Solution

The fourth proportional to 170,187.95, 255,439.53 and 86,007.35 is: 129,090.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,187.95 : 255,439.53 = 86,007.35 : x
  2. Step 2: Convert to fraction form
    170,187.95/255,439.53 = 86,007.35/x
  3. Step 3: Cross multiply
    170,187.95x = 255,439.53 × 86,007.35
  4. Step 4: Simplify right side
    170,187.95x = 21,969,675,783.35
  5. Step 5: Solve for x
    x = 21,969,675,783.35/170,187.95
  6. Step 6: Final answer
    x = 129,090.67

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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.