Home / 118,962.90-178,170.39-68,918.76

Finding the Fourth Proportional to 118,962.90, 178,170.39 and 68,918.76

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Solution

The fourth proportional to 118,962.90, 178,170.39 and 68,918.76 is: 103,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,962.90 : 178,170.39 = 68,918.76 : x
  2. Step 2: Convert to fraction form
    118,962.90/178,170.39 = 68,918.76/x
  3. Step 3: Cross multiply
    118,962.90x = 178,170.39 × 68,918.76
  4. Step 4: Simplify right side
    118,962.90x = 12,279,282,347.52
  5. Step 5: Solve for x
    x = 12,279,282,347.52/118,962.90
  6. Step 6: Final answer
    x = 103,219.43

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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.