Home / 81,258.65-121,900.96-25,085.55

Finding the Fourth Proportional to 81,258.65, 121,900.96 and 25,085.55

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Solution

The fourth proportional to 81,258.65, 121,900.96 and 25,085.55 is: 37,632.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,258.65 : 121,900.96 = 25,085.55 : x
  2. Step 2: Convert to fraction form
    81,258.65/121,900.96 = 25,085.55/x
  3. Step 3: Cross multiply
    81,258.65x = 121,900.96 × 25,085.55
  4. Step 4: Simplify right side
    81,258.65x = 3,057,952,627.13
  5. Step 5: Solve for x
    x = 3,057,952,627.13/81,258.65
  6. Step 6: Final answer
    x = 37,632.34

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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.