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Finding the Fourth Proportional to 98,980.68, 148,484.38 and 28,859.38

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Solution

The fourth proportional to 98,980.68, 148,484.38 and 28,859.38 is: 43,292.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,980.68 : 148,484.38 = 28,859.38 : x
  2. Step 2: Convert to fraction form
    98,980.68/148,484.38 = 28,859.38/x
  3. Step 3: Cross multiply
    98,980.68x = 148,484.38 × 28,859.38
  4. Step 4: Simplify right side
    98,980.68x = 4,285,167,146.48
  5. Step 5: Solve for x
    x = 4,285,167,146.48/98,980.68
  6. Step 6: Final answer
    x = 43,292.97

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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.