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Finding the Fourth Proportional to 98,980.88, 148,496.07 and 28,860.19

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Solution

The fourth proportional to 98,980.88, 148,496.07 and 28,860.19 is: 43,297.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,980.88 : 148,496.07 = 28,860.19 : x
  2. Step 2: Convert to fraction form
    98,980.88/148,496.07 = 28,860.19/x
  3. Step 3: Cross multiply
    98,980.88x = 148,496.07 × 28,860.19
  4. Step 4: Simplify right side
    98,980.88x = 4,285,624,369.10
  5. Step 5: Solve for x
    x = 4,285,624,369.10/98,980.88
  6. Step 6: Final answer
    x = 43,297.50

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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.