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Finding the Fourth Proportional to 199,041.60, 274,674.60 and 112,999.80

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Solution

The fourth proportional to 199,041.60, 274,674.60 and 112,999.80 is: 155,938.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,041.60 : 274,674.60 = 112,999.80 : x
  2. Step 2: Convert to fraction form
    199,041.60/274,674.60 = 112,999.80/x
  3. Step 3: Cross multiply
    199,041.60x = 274,674.60 × 112,999.80
  4. Step 4: Simplify right side
    199,041.60x = 31,038,174,865.08
  5. Step 5: Solve for x
    x = 31,038,174,865.08/199,041.60
  6. Step 6: Final answer
    x = 155,938.13

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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.