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Finding the Fourth Proportional to 118,820.40, 178,224.12 and 39,926.40

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Solution

The fourth proportional to 118,820.40, 178,224.12 and 39,926.40 is: 59,887.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,820.40 : 178,224.12 = 39,926.40 : x
  2. Step 2: Convert to fraction form
    118,820.40/178,224.12 = 39,926.40/x
  3. Step 3: Cross multiply
    118,820.40x = 178,224.12 × 39,926.40
  4. Step 4: Simplify right side
    118,820.40x = 7,115,847,504.77
  5. Step 5: Solve for x
    x = 7,115,847,504.77/118,820.40
  6. Step 6: Final answer
    x = 59,887.42

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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.