Home / 142,261.48-196,238.65-91,256.09

Finding the Fourth Proportional to 142,261.48, 196,238.65 and 91,256.09

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Solution

The fourth proportional to 142,261.48, 196,238.65 and 91,256.09 is: 125,880.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,261.48 : 196,238.65 = 91,256.09 : x
  2. Step 2: Convert to fraction form
    142,261.48/196,238.65 = 91,256.09/x
  3. Step 3: Cross multiply
    142,261.48x = 196,238.65 × 91,256.09
  4. Step 4: Simplify right side
    142,261.48x = 17,907,970,867.65
  5. Step 5: Solve for x
    x = 17,907,970,867.65/142,261.48
  6. Step 6: Final answer
    x = 125,880.67

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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.