Home / 121,407.84-167,629.04-101,316.56

Finding the Fourth Proportional to 121,407.84, 167,629.04 and 101,316.56

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Solution

The fourth proportional to 121,407.84, 167,629.04 and 101,316.56 is: 139,888.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,407.84 : 167,629.04 = 101,316.56 : x
  2. Step 2: Convert to fraction form
    121,407.84/167,629.04 = 101,316.56/x
  3. Step 3: Cross multiply
    121,407.84x = 167,629.04 × 101,316.56
  4. Step 4: Simplify right side
    121,407.84x = 16,983,597,688.90
  5. Step 5: Solve for x
    x = 16,983,597,688.90/121,407.84
  6. Step 6: Final answer
    x = 139,888.81

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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.