Home / 121,064.47-167,074.35-100,887.55

Finding the Fourth Proportional to 121,064.47, 167,074.35 and 100,887.55

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Solution

The fourth proportional to 121,064.47, 167,074.35 and 100,887.55 is: 139,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,064.47 : 167,074.35 = 100,887.55 : x
  2. Step 2: Convert to fraction form
    121,064.47/167,074.35 = 100,887.55/x
  3. Step 3: Cross multiply
    121,064.47x = 167,074.35 × 100,887.55
  4. Step 4: Simplify right side
    121,064.47x = 16,855,721,839.34
  5. Step 5: Solve for x
    x = 16,855,721,839.34/121,064.47
  6. Step 6: Final answer
    x = 139,229.30

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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.