Home / 118,669.89-163,763.07-64,220.80

Finding the Fourth Proportional to 118,669.89, 163,763.07 and 64,220.80

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Solution

The fourth proportional to 118,669.89, 163,763.07 and 64,220.80 is: 88,623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,669.89 : 163,763.07 = 64,220.80 : x
  2. Step 2: Convert to fraction form
    118,669.89/163,763.07 = 64,220.80/x
  3. Step 3: Cross multiply
    118,669.89x = 163,763.07 × 64,220.80
  4. Step 4: Simplify right side
    118,669.89x = 10,516,995,365.86
  5. Step 5: Solve for x
    x = 10,516,995,365.86/118,669.89
  6. Step 6: Final answer
    x = 88,623.96

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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.