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Finding the Fourth Proportional to 134,641.36, 185,804.12 and 74,212

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Solution

The fourth proportional to 134,641.36, 185,804.12 and 74,212 is: 102,412.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,641.36 : 185,804.12 = 74,212 : x
  2. Step 2: Convert to fraction form
    134,641.36/185,804.12 = 74,212/x
  3. Step 3: Cross multiply
    134,641.36x = 185,804.12 × 74,212
  4. Step 4: Simplify right side
    134,641.36x = 13,788,895,353.44
  5. Step 5: Solve for x
    x = 13,788,895,353.44/134,641.36
  6. Step 6: Final answer
    x = 102,412.03

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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.