Home / 118,659.36-178,112.08-79,490.19

Finding the Fourth Proportional to 118,659.36, 178,112.08 and 79,490.19

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Solution

The fourth proportional to 118,659.36, 178,112.08 and 79,490.19 is: 119,317.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,659.36 : 178,112.08 = 79,490.19 : x
  2. Step 2: Convert to fraction form
    118,659.36/178,112.08 = 79,490.19/x
  3. Step 3: Cross multiply
    118,659.36x = 178,112.08 × 79,490.19
  4. Step 4: Simplify right side
    118,659.36x = 14,158,163,847.78
  5. Step 5: Solve for x
    x = 14,158,163,847.78/118,659.36
  6. Step 6: Final answer
    x = 119,317.71

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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.