Home / 121,405.02-167,539.55-67,692.30

Finding the Fourth Proportional to 121,405.02, 167,539.55 and 67,692.30

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Solution

The fourth proportional to 121,405.02, 167,539.55 and 67,692.30 is: 93,415.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,405.02 : 167,539.55 = 67,692.30 : x
  2. Step 2: Convert to fraction form
    121,405.02/167,539.55 = 67,692.30/x
  3. Step 3: Cross multiply
    121,405.02x = 167,539.55 × 67,692.30
  4. Step 4: Simplify right side
    121,405.02x = 11,341,137,480.47
  5. Step 5: Solve for x
    x = 11,341,137,480.47/121,405.02
  6. Step 6: Final answer
    x = 93,415.72

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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.