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Finding the Fourth Proportional to 119,611.88, 165,055.80 and 65,893.76

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Solution

The fourth proportional to 119,611.88, 165,055.80 and 65,893.76 is: 90,928.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,611.88 : 165,055.80 = 65,893.76 : x
  2. Step 2: Convert to fraction form
    119,611.88/165,055.80 = 65,893.76/x
  3. Step 3: Cross multiply
    119,611.88x = 165,055.80 × 65,893.76
  4. Step 4: Simplify right side
    119,611.88x = 10,876,147,271.81
  5. Step 5: Solve for x
    x = 10,876,147,271.81/119,611.88
  6. Step 6: Final answer
    x = 90,928.65

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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.