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Finding the Fourth Proportional to 164,810.86, 247,223.48 and 80,641.90

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Solution

The fourth proportional to 164,810.86, 247,223.48 and 80,641.90 is: 120,966.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,810.86 : 247,223.48 = 80,641.90 : x
  2. Step 2: Convert to fraction form
    164,810.86/247,223.48 = 80,641.90/x
  3. Step 3: Cross multiply
    164,810.86x = 247,223.48 × 80,641.90
  4. Step 4: Simplify right side
    164,810.86x = 19,936,571,151.81
  5. Step 5: Solve for x
    x = 19,936,571,151.81/164,810.86
  6. Step 6: Final answer
    x = 120,966.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.