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Finding the Fourth Proportional to 134,365.74, 185,362.68 and 86,634.42

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Solution

The fourth proportional to 134,365.74, 185,362.68 and 86,634.42 is: 119,515.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,365.74 : 185,362.68 = 86,634.42 : x
  2. Step 2: Convert to fraction form
    134,365.74/185,362.68 = 86,634.42/x
  3. Step 3: Cross multiply
    134,365.74x = 185,362.68 × 86,634.42
  4. Step 4: Simplify right side
    134,365.74x = 16,058,788,271.45
  5. Step 5: Solve for x
    x = 16,058,788,271.45/134,365.74
  6. Step 6: Final answer
    x = 119,515.50

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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.