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Finding the Fourth Proportional to 98,895.87, 148,347.90 and 28,775.18

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Solution

The fourth proportional to 98,895.87, 148,347.90 and 28,775.18 is: 43,163.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,895.87 : 148,347.90 = 28,775.18 : x
  2. Step 2: Convert to fraction form
    98,895.87/148,347.90 = 28,775.18/x
  3. Step 3: Cross multiply
    98,895.87x = 148,347.90 × 28,775.18
  4. Step 4: Simplify right side
    98,895.87x = 4,268,737,525.12
  5. Step 5: Solve for x
    x = 4,268,737,525.12/98,895.87
  6. Step 6: Final answer
    x = 43,163.96

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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.