Home / 118,729.20-178,093.80-74,492.40

Finding the Fourth Proportional to 118,729.20, 178,093.80 and 74,492.40

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Solution

The fourth proportional to 118,729.20, 178,093.80 and 74,492.40 is: 111,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,729.20 : 178,093.80 = 74,492.40 : x
  2. Step 2: Convert to fraction form
    118,729.20/178,093.80 = 74,492.40/x
  3. Step 3: Cross multiply
    118,729.20x = 178,093.80 × 74,492.40
  4. Step 4: Simplify right side
    118,729.20x = 13,266,634,587.12
  5. Step 5: Solve for x
    x = 13,266,634,587.12/118,729.20
  6. Step 6: Final answer
    x = 111,738.60

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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.