Home / 121,139.36-167,173.20-67,426.64

Finding the Fourth Proportional to 121,139.36, 167,173.20 and 67,426.64

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Solution

The fourth proportional to 121,139.36, 167,173.20 and 67,426.64 is: 93,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,139.36 : 167,173.20 = 67,426.64 : x
  2. Step 2: Convert to fraction form
    121,139.36/167,173.20 = 67,426.64/x
  3. Step 3: Cross multiply
    121,139.36x = 167,173.20 × 67,426.64
  4. Step 4: Simplify right side
    121,139.36x = 11,271,927,174.05
  5. Step 5: Solve for x
    x = 11,271,927,174.05/121,139.36
  6. Step 6: Final answer
    x = 93,049.25

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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.