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Finding the Fourth Proportional to 202,750.65, 279,783.87 and 112,099.50

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Solution

The fourth proportional to 202,750.65, 279,783.87 and 112,099.50 is: 154,690.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,750.65 : 279,783.87 = 112,099.50 : x
  2. Step 2: Convert to fraction form
    202,750.65/279,783.87 = 112,099.50/x
  3. Step 3: Cross multiply
    202,750.65x = 279,783.87 × 112,099.50
  4. Step 4: Simplify right side
    202,750.65x = 31,363,631,935.07
  5. Step 5: Solve for x
    x = 31,363,631,935.07/202,750.65
  6. Step 6: Final answer
    x = 154,690.66

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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.