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Finding the Fourth Proportional to 119,012, 164,453.88 and 86,690.36

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Solution

The fourth proportional to 119,012, 164,453.88 and 86,690.36 is: 119,791.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,012 : 164,453.88 = 86,690.36 : x
  2. Step 2: Convert to fraction form
    119,012/164,453.88 = 86,690.36/x
  3. Step 3: Cross multiply
    119,012x = 164,453.88 × 86,690.36
  4. Step 4: Simplify right side
    119,012x = 14,256,566,060.60
  5. Step 5: Solve for x
    x = 14,256,566,060.60/119,012
  6. Step 6: Final answer
    x = 119,791.00

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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.