Home / 154,270.81-212,913.44-86,291.56

Finding the Fourth Proportional to 154,270.81, 212,913.44 and 86,291.56

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Solution

The fourth proportional to 154,270.81, 212,913.44 and 86,291.56 is: 119,093.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,270.81 : 212,913.44 = 86,291.56 : x
  2. Step 2: Convert to fraction form
    154,270.81/212,913.44 = 86,291.56/x
  3. Step 3: Cross multiply
    154,270.81x = 212,913.44 × 86,291.56
  4. Step 4: Simplify right side
    154,270.81x = 18,372,632,798.15
  5. Step 5: Solve for x
    x = 18,372,632,798.15/154,270.81
  6. Step 6: Final answer
    x = 119,093.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.