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Finding the Fourth Proportional to 118,716, 178,074 and 35,610

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Solution

The fourth proportional to 118,716, 178,074 and 35,610 is: 53,415

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,716 : 178,074 = 35,610 : x
  2. Step 2: Convert to fraction form
    118,716/178,074 = 35,610/x
  3. Step 3: Cross multiply
    118,716x = 178,074 × 35,610
  4. Step 4: Simplify right side
    118,716x = 6,341,215,140
  5. Step 5: Solve for x
    x = 6,341,215,140/118,716
  6. Step 6: Final answer
    x = 53,415

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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.