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Finding the Fourth Proportional to 119,647.80, 165,113.62 and 65,932.80

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Solution

The fourth proportional to 119,647.80, 165,113.62 and 65,932.80 is: 90,987.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,647.80 : 165,113.62 = 65,932.80 : x
  2. Step 2: Convert to fraction form
    119,647.80/165,113.62 = 65,932.80/x
  3. Step 3: Cross multiply
    119,647.80x = 165,113.62 × 65,932.80
  4. Step 4: Simplify right side
    119,647.80x = 10,886,403,800.36
  5. Step 5: Solve for x
    x = 10,886,403,800.36/119,647.80
  6. Step 6: Final answer
    x = 90,987.08

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1.5x scale

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.