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Finding the Fourth Proportional to 118,683.69, 163,785.30 and 64,973.71

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Solution

The fourth proportional to 118,683.69, 163,785.30 and 64,973.71 is: 89,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,683.69 : 163,785.30 = 64,973.71 : x
  2. Step 2: Convert to fraction form
    118,683.69/163,785.30 = 64,973.71/x
  3. Step 3: Cross multiply
    118,683.69x = 163,785.30 × 64,973.71
  4. Step 4: Simplify right side
    118,683.69x = 10,641,738,175.00
  5. Step 5: Solve for x
    x = 10,641,738,175.00/118,683.69
  6. Step 6: Final answer
    x = 89,664.70

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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.