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Finding the Fourth Proportional to 138,575.10, 207,870.06 and 43,798.08

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Solution

The fourth proportional to 138,575.10, 207,870.06 and 43,798.08 is: 65,699.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,575.10 : 207,870.06 = 43,798.08 : x
  2. Step 2: Convert to fraction form
    138,575.10/207,870.06 = 43,798.08/x
  3. Step 3: Cross multiply
    138,575.10x = 207,870.06 × 43,798.08
  4. Step 4: Simplify right side
    138,575.10x = 9,104,309,517.48
  5. Step 5: Solve for x
    x = 9,104,309,517.48/138,575.10
  6. Step 6: Final answer
    x = 65,699.46

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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.