Home / 121,163.42-167,214.58-70,189.86

Finding the Fourth Proportional to 121,163.42, 167,214.58 and 70,189.86

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Solution

The fourth proportional to 121,163.42, 167,214.58 and 70,189.86 is: 96,867.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,163.42 : 167,214.58 = 70,189.86 : x
  2. Step 2: Convert to fraction form
    121,163.42/167,214.58 = 70,189.86/x
  3. Step 3: Cross multiply
    121,163.42x = 167,214.58 × 70,189.86
  4. Step 4: Simplify right side
    121,163.42x = 11,736,767,960.16
  5. Step 5: Solve for x
    x = 11,736,767,960.16/121,163.42
  6. Step 6: Final answer
    x = 96,867.26

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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.