Home / 121,128.60-181,723.18-119,119.48

Finding the Fourth Proportional to 121,128.60, 181,723.18 and 119,119.48

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Solution

The fourth proportional to 121,128.60, 181,723.18 and 119,119.48 is: 178,709.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128.60 : 181,723.18 = 119,119.48 : x
  2. Step 2: Convert to fraction form
    121,128.60/181,723.18 = 119,119.48/x
  3. Step 3: Cross multiply
    121,128.60x = 181,723.18 × 119,119.48
  4. Step 4: Simplify right side
    121,128.60x = 21,646,770,705.55
  5. Step 5: Solve for x
    x = 21,646,770,705.55/121,128.60
  6. Step 6: Final answer
    x = 178,709.00

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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.