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Finding the Fourth Proportional to 121,453.63, 167,606.31 and 67,742.12

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Solution

The fourth proportional to 121,453.63, 167,606.31 and 67,742.12 is: 93,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,453.63 : 167,606.31 = 67,742.12 : x
  2. Step 2: Convert to fraction form
    121,453.63/167,606.31 = 67,742.12/x
  3. Step 3: Cross multiply
    121,453.63x = 167,606.31 × 67,742.12
  4. Step 4: Simplify right side
    121,453.63x = 11,354,006,866.25
  5. Step 5: Solve for x
    x = 11,354,006,866.25/121,453.63
  6. Step 6: Final answer
    x = 93,484.30

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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.