Home / 121,136.55-167,166.76-67,421.58

Finding the Fourth Proportional to 121,136.55, 167,166.76 and 67,421.58

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Solution

The fourth proportional to 121,136.55, 167,166.76 and 67,421.58 is: 93,040.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,136.55 : 167,166.76 = 67,421.58 : x
  2. Step 2: Convert to fraction form
    121,136.55/167,166.76 = 67,421.58/x
  3. Step 3: Cross multiply
    121,136.55x = 167,166.76 × 67,421.58
  4. Step 4: Simplify right side
    121,136.55x = 11,270,646,745.57
  5. Step 5: Solve for x
    x = 11,270,646,745.57/121,136.55
  6. Step 6: Final answer
    x = 93,040.85

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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.