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Finding the Fourth Proportional to 115,210.50, 158,990.49 and 62,218.50

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Solution

The fourth proportional to 115,210.50, 158,990.49 and 62,218.50 is: 85,861.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,210.50 : 158,990.49 = 62,218.50 : x
  2. Step 2: Convert to fraction form
    115,210.50/158,990.49 = 62,218.50/x
  3. Step 3: Cross multiply
    115,210.50x = 158,990.49 × 62,218.50
  4. Step 4: Simplify right side
    115,210.50x = 9,892,149,802.07
  5. Step 5: Solve for x
    x = 9,892,149,802.07/115,210.50
  6. Step 6: Final answer
    x = 85,861.53

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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.