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Finding the Fourth Proportional to 98,649,980.10, 138,336,720.30 and 98,649,980.10

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Solution

The fourth proportional to 98,649,980.10, 138,336,720.30 and 98,649,980.10 is: 138,336,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,649,980.10 : 138,336,720.30 = 98,649,980.10 : x
  2. Step 2: Convert to fraction form
    98,649,980.10/138,336,720.30 = 98,649,980.10/x
  3. Step 3: Cross multiply
    98,649,980.10x = 138,336,720.30 × 98,649,980.10
  4. Step 4: Simplify right side
    98,649,980.10x = 13,646,914,704,694,266
  5. Step 5: Solve for x
    x = 13,646,914,704,694,266/98,649,980.10
  6. Step 6: Final answer
    x = 138,336,720.30

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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.