Home / 121,357.08-167,394.60-80,520.32

Finding the Fourth Proportional to 121,357.08, 167,394.60 and 80,520.32

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Solution

The fourth proportional to 121,357.08, 167,394.60 and 80,520.32 is: 111,066.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,357.08 : 167,394.60 = 80,520.32 : x
  2. Step 2: Convert to fraction form
    121,357.08/167,394.60 = 80,520.32/x
  3. Step 3: Cross multiply
    121,357.08x = 167,394.60 × 80,520.32
  4. Step 4: Simplify right side
    121,357.08x = 13,478,666,758.27
  5. Step 5: Solve for x
    x = 13,478,666,758.27/121,357.08
  6. Step 6: Final answer
    x = 111,066.18

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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.