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Finding the Fourth Proportional to 98,445.10, 138,216.80 and 98,445.10

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Solution

The fourth proportional to 98,445.10, 138,216.80 and 98,445.10 is: 138,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,445.10 : 138,216.80 = 98,445.10 : x
  2. Step 2: Convert to fraction form
    98,445.10/138,216.80 = 98,445.10/x
  3. Step 3: Cross multiply
    98,445.10x = 138,216.80 × 98,445.10
  4. Step 4: Simplify right side
    98,445.10x = 13,606,766,697.68
  5. Step 5: Solve for x
    x = 13,606,766,697.68/98,445.10
  6. Step 6: Final answer
    x = 138,216.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.