Home / 118,739.90-178,054.48-68,834.28

Finding the Fourth Proportional to 118,739.90, 178,054.48 and 68,834.28

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Solution

The fourth proportional to 118,739.90, 178,054.48 and 68,834.28 is: 103,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,739.90 : 178,054.48 = 68,834.28 : x
  2. Step 2: Convert to fraction form
    118,739.90/178,054.48 = 68,834.28/x
  3. Step 3: Cross multiply
    118,739.90x = 178,054.48 × 68,834.28
  4. Step 4: Simplify right side
    118,739.90x = 12,256,251,931.57
  5. Step 5: Solve for x
    x = 12,256,251,931.57/118,739.90
  6. Step 6: Final answer
    x = 103,219.32

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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.