Home / 121,316.40-167,409.72-66,857.76

Finding the Fourth Proportional to 121,316.40, 167,409.72 and 66,857.76

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Solution

The fourth proportional to 121,316.40, 167,409.72 and 66,857.76 is: 92,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,316.40 : 167,409.72 = 66,857.76 : x
  2. Step 2: Convert to fraction form
    121,316.40/167,409.72 = 66,857.76/x
  3. Step 3: Cross multiply
    121,316.40x = 167,409.72 × 66,857.76
  4. Step 4: Simplify right side
    121,316.40x = 11,192,638,881.43
  5. Step 5: Solve for x
    x = 11,192,638,881.43/121,316.40
  6. Step 6: Final answer
    x = 92,259.90

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1.5x scale

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.