Home / 121,738.02-167,731.08-90,982.32

Finding the Fourth Proportional to 121,738.02, 167,731.08 and 90,982.32

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Solution

The fourth proportional to 121,738.02, 167,731.08 and 90,982.32 is: 125,355.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,738.02 : 167,731.08 = 90,982.32 : x
  2. Step 2: Convert to fraction form
    121,738.02/167,731.08 = 90,982.32/x
  3. Step 3: Cross multiply
    121,738.02x = 167,731.08 × 90,982.32
  4. Step 4: Simplify right side
    121,738.02x = 15,260,562,794.51
  5. Step 5: Solve for x
    x = 15,260,562,794.51/121,738.02
  6. Step 6: Final answer
    x = 125,355.77

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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.