Home / 118,698.78-163,803.52-64,984.70

Finding the Fourth Proportional to 118,698.78, 163,803.52 and 64,984.70

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Solution

The fourth proportional to 118,698.78, 163,803.52 and 64,984.70 is: 89,678.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,698.78 : 163,803.52 = 64,984.70 : x
  2. Step 2: Convert to fraction form
    118,698.78/163,803.52 = 64,984.70/x
  3. Step 3: Cross multiply
    118,698.78x = 163,803.52 × 64,984.70
  4. Step 4: Simplify right side
    118,698.78x = 10,644,721,624.66
  5. Step 5: Solve for x
    x = 10,644,721,624.66/118,698.78
  6. Step 6: Final answer
    x = 89,678.44

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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.