Home / 121,103.32-167,053.50-72,692.36

Finding the Fourth Proportional to 121,103.32, 167,053.50 and 72,692.36

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Solution

The fourth proportional to 121,103.32, 167,053.50 and 72,692.36 is: 100,273.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,103.32 : 167,053.50 = 72,692.36 : x
  2. Step 2: Convert to fraction form
    121,103.32/167,053.50 = 72,692.36/x
  3. Step 3: Cross multiply
    121,103.32x = 167,053.50 × 72,692.36
  4. Step 4: Simplify right side
    121,103.32x = 12,143,513,161.26
  5. Step 5: Solve for x
    x = 12,143,513,161.26/121,103.32
  6. Step 6: Final answer
    x = 100,273.99

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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.