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Finding the Fourth Proportional to 105,273.60, 157,737.60 and 89,721.60

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Solution

The fourth proportional to 105,273.60, 157,737.60 and 89,721.60 is: 134,435.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,273.60 : 157,737.60 = 89,721.60 : x
  2. Step 2: Convert to fraction form
    105,273.60/157,737.60 = 89,721.60/x
  3. Step 3: Cross multiply
    105,273.60x = 157,737.60 × 89,721.60
  4. Step 4: Simplify right side
    105,273.60x = 14,152,469,852.16
  5. Step 5: Solve for x
    x = 14,152,469,852.16/105,273.60
  6. Step 6: Final answer
    x = 134,435.13

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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.