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Finding the Fourth Proportional to 121,014.80, 181,435.80 and 68,440.40

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Solution

The fourth proportional to 121,014.80, 181,435.80 and 68,440.40 is: 102,611.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,014.80 : 181,435.80 = 68,440.40 : x
  2. Step 2: Convert to fraction form
    121,014.80/181,435.80 = 68,440.40/x
  3. Step 3: Cross multiply
    121,014.80x = 181,435.80 × 68,440.40
  4. Step 4: Simplify right side
    121,014.80x = 12,417,538,726.32
  5. Step 5: Solve for x
    x = 12,417,538,726.32/121,014.80
  6. Step 6: Final answer
    x = 102,611.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.