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Finding the Fourth Proportional to 118,673.76, 163,763.48 and 64,948.40

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Solution

The fourth proportional to 118,673.76, 163,763.48 and 64,948.40 is: 89,625.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,673.76 : 163,763.48 = 64,948.40 : x
  2. Step 2: Convert to fraction form
    118,673.76/163,763.48 = 64,948.40/x
  3. Step 3: Cross multiply
    118,673.76x = 163,763.48 × 64,948.40
  4. Step 4: Simplify right side
    118,673.76x = 10,636,176,004.43
  5. Step 5: Solve for x
    x = 10,636,176,004.43/118,673.76
  6. Step 6: Final answer
    x = 89,625.34

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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.