Home / 156,629.80-234,426.30-121,378.60

Finding the Fourth Proportional to 156,629.80, 234,426.30 and 121,378.60

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Solution

The fourth proportional to 156,629.80, 234,426.30 and 121,378.60 is: 181,666.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,629.80 : 234,426.30 = 121,378.60 : x
  2. Step 2: Convert to fraction form
    156,629.80/234,426.30 = 121,378.60/x
  3. Step 3: Cross multiply
    156,629.80x = 234,426.30 × 121,378.60
  4. Step 4: Simplify right side
    156,629.80x = 28,454,336,097.18
  5. Step 5: Solve for x
    x = 28,454,336,097.18/156,629.80
  6. Step 6: Final answer
    x = 181,666.17

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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.