Home / 118,716.80-178,075.20-79,145.60

Finding the Fourth Proportional to 118,716.80, 178,075.20 and 79,145.60

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Solution

The fourth proportional to 118,716.80, 178,075.20 and 79,145.60 is: 118,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,716.80 : 178,075.20 = 79,145.60 : x
  2. Step 2: Convert to fraction form
    118,716.80/178,075.20 = 79,145.60/x
  3. Step 3: Cross multiply
    118,716.80x = 178,075.20 × 79,145.60
  4. Step 4: Simplify right side
    118,716.80x = 14,093,868,549.12
  5. Step 5: Solve for x
    x = 14,093,868,549.12/118,716.80
  6. Step 6: Final answer
    x = 118,718.40

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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.