Home / 121,289.34-167,448.75-81,071.22

Finding the Fourth Proportional to 121,289.34, 167,448.75 and 81,071.22

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Solution

The fourth proportional to 121,289.34, 167,448.75 and 81,071.22 is: 111,924.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,289.34 : 167,448.75 = 81,071.22 : x
  2. Step 2: Convert to fraction form
    121,289.34/167,448.75 = 81,071.22/x
  3. Step 3: Cross multiply
    121,289.34x = 167,448.75 × 81,071.22
  4. Step 4: Simplify right side
    121,289.34x = 13,575,274,449.98
  5. Step 5: Solve for x
    x = 13,575,274,449.98/121,289.34
  6. Step 6: Final answer
    x = 111,924.71

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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.