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Finding the Fourth Proportional to 121,896.32, 168,232.50 and 68,184.32

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Solution

The fourth proportional to 121,896.32, 168,232.50 and 68,184.32 is: 94,103.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,896.32 : 168,232.50 = 68,184.32 : x
  2. Step 2: Convert to fraction form
    121,896.32/168,232.50 = 68,184.32/x
  3. Step 3: Cross multiply
    121,896.32x = 168,232.50 × 68,184.32
  4. Step 4: Simplify right side
    121,896.32x = 11,470,818,614.40
  5. Step 5: Solve for x
    x = 11,470,818,614.40/121,896.32
  6. Step 6: Final answer
    x = 94,103.08

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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.