Home / 118,631.25-163,709.64-64,915.47

Finding the Fourth Proportional to 118,631.25, 163,709.64 and 64,915.47

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Solution

The fourth proportional to 118,631.25, 163,709.64 and 64,915.47 is: 89,582.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,631.25 : 163,709.64 = 64,915.47 : x
  2. Step 2: Convert to fraction form
    118,631.25/163,709.64 = 64,915.47/x
  3. Step 3: Cross multiply
    118,631.25x = 163,709.64 × 64,915.47
  4. Step 4: Simplify right side
    118,631.25x = 10,627,288,224.13
  5. Step 5: Solve for x
    x = 10,627,288,224.13/118,631.25
  6. Step 6: Final answer
    x = 89,582.54

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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.