Home / 121,147.06-167,163-67,430.70

Finding the Fourth Proportional to 121,147.06, 167,163 and 67,430.70

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Solution

The fourth proportional to 121,147.06, 167,163 and 67,430.70 is: 93,043.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,147.06 : 167,163 = 67,430.70 : x
  2. Step 2: Convert to fraction form
    121,147.06/167,163 = 67,430.70/x
  3. Step 3: Cross multiply
    121,147.06x = 167,163 × 67,430.70
  4. Step 4: Simplify right side
    121,147.06x = 11,271,918,104.10
  5. Step 5: Solve for x
    x = 11,271,918,104.10/121,147.06
  6. Step 6: Final answer
    x = 93,043.27

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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.