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Finding the Fourth Proportional to 135,347.32, 186,774.52 and 74,918.08

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Solution

The fourth proportional to 135,347.32, 186,774.52 and 74,918.08 is: 103,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,347.32 : 186,774.52 = 74,918.08 : x
  2. Step 2: Convert to fraction form
    135,347.32/186,774.52 = 74,918.08/x
  3. Step 3: Cross multiply
    135,347.32x = 186,774.52 × 74,918.08
  4. Step 4: Simplify right side
    135,347.32x = 13,992,788,431.32
  5. Step 5: Solve for x
    x = 13,992,788,431.32/135,347.32
  6. Step 6: Final answer
    x = 103,384.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.