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Finding the Fourth Proportional to 121,176, 167,235.84 and 70,917.12

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Solution

The fourth proportional to 121,176, 167,235.84 and 70,917.12 is: 97,873.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,176 : 167,235.84 = 70,917.12 : x
  2. Step 2: Convert to fraction form
    121,176/167,235.84 = 70,917.12/x
  3. Step 3: Cross multiply
    121,176x = 167,235.84 × 70,917.12
  4. Step 4: Simplify right side
    121,176x = 11,859,884,133.58
  5. Step 5: Solve for x
    x = 11,859,884,133.58/121,176
  6. Step 6: Final answer
    x = 97,873.21

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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.