Home / 121,715.64-167,938.79-70,698.05

Finding the Fourth Proportional to 121,715.64, 167,938.79 and 70,698.05

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Solution

The fourth proportional to 121,715.64, 167,938.79 and 70,698.05 is: 97,546.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,715.64 : 167,938.79 = 70,698.05 : x
  2. Step 2: Convert to fraction form
    121,715.64/167,938.79 = 70,698.05/x
  3. Step 3: Cross multiply
    121,715.64x = 167,938.79 × 70,698.05
  4. Step 4: Simplify right side
    121,715.64x = 11,872,945,713.95
  5. Step 5: Solve for x
    x = 11,872,945,713.95/121,715.64
  6. Step 6: Final answer
    x = 97,546.59

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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.