Home / 121,861.81-168,166.16-67,412.56

Finding the Fourth Proportional to 121,861.81, 168,166.16 and 67,412.56

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Solution

The fourth proportional to 121,861.81, 168,166.16 and 67,412.56 is: 93,027.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,861.81 : 168,166.16 = 67,412.56 : x
  2. Step 2: Convert to fraction form
    121,861.81/168,166.16 = 67,412.56/x
  3. Step 3: Cross multiply
    121,861.81x = 168,166.16 × 67,412.56
  4. Step 4: Simplify right side
    121,861.81x = 11,336,511,634.57
  5. Step 5: Solve for x
    x = 11,336,511,634.57/121,861.81
  6. Step 6: Final answer
    x = 93,027.60

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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.