Home / 118,631.63-163,704.78-64,917.69

Finding the Fourth Proportional to 118,631.63, 163,704.78 and 64,917.69

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Solution

The fourth proportional to 118,631.63, 163,704.78 and 64,917.69 is: 89,582.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,631.63 : 163,704.78 = 64,917.69 : x
  2. Step 2: Convert to fraction form
    118,631.63/163,704.78 = 64,917.69/x
  3. Step 3: Cross multiply
    118,631.63x = 163,704.78 × 64,917.69
  4. Step 4: Simplify right side
    118,631.63x = 10,627,336,159.56
  5. Step 5: Solve for x
    x = 10,627,336,159.56/118,631.63
  6. Step 6: Final answer
    x = 89,582.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.