Home / 121,249.34-167,393.50-81,031.22

Finding the Fourth Proportional to 121,249.34, 167,393.50 and 81,031.22

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Solution

The fourth proportional to 121,249.34, 167,393.50 and 81,031.22 is: 111,869.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,249.34 : 167,393.50 = 81,031.22 : x
  2. Step 2: Convert to fraction form
    121,249.34/167,393.50 = 81,031.22/x
  3. Step 3: Cross multiply
    121,249.34x = 167,393.50 × 81,031.22
  4. Step 4: Simplify right side
    121,249.34x = 13,564,099,525.07
  5. Step 5: Solve for x
    x = 13,564,099,525.07/121,249.34
  6. Step 6: Final answer
    x = 111,869.47

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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.