Home / 118,678.28-178,022.88-66,048.12

Finding the Fourth Proportional to 118,678.28, 178,022.88 and 66,048.12

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Solution

The fourth proportional to 118,678.28, 178,022.88 and 66,048.12 is: 99,075.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,678.28 : 178,022.88 = 66,048.12 : x
  2. Step 2: Convert to fraction form
    118,678.28/178,022.88 = 66,048.12/x
  3. Step 3: Cross multiply
    118,678.28x = 178,022.88 × 66,048.12
  4. Step 4: Simplify right side
    118,678.28x = 11,758,076,540.99
  5. Step 5: Solve for x
    x = 11,758,076,540.99/118,678.28
  6. Step 6: Final answer
    x = 99,075.22

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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.