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Finding the Fourth Proportional to 98,864.70, 148,282.65 and 28,736.70

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Solution

The fourth proportional to 98,864.70, 148,282.65 and 28,736.70 is: 43,100.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,864.70 : 148,282.65 = 28,736.70 : x
  2. Step 2: Convert to fraction form
    98,864.70/148,282.65 = 28,736.70/x
  3. Step 3: Cross multiply
    98,864.70x = 148,282.65 × 28,736.70
  4. Step 4: Simplify right side
    98,864.70x = 4,261,154,028.26
  5. Step 5: Solve for x
    x = 4,261,154,028.26/98,864.70
  6. Step 6: Final answer
    x = 43,100.86

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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.