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Finding the Fourth Proportional to 191,240.80, 286,918.80 and 102,536.80

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Solution

The fourth proportional to 191,240.80, 286,918.80 and 102,536.80 is: 153,836.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,240.80 : 286,918.80 = 102,536.80 : x
  2. Step 2: Convert to fraction form
    191,240.80/286,918.80 = 102,536.80/x
  3. Step 3: Cross multiply
    191,240.80x = 286,918.80 × 102,536.80
  4. Step 4: Simplify right side
    191,240.80x = 29,419,735,611.84
  5. Step 5: Solve for x
    x = 29,419,735,611.84/191,240.80
  6. Step 6: Final answer
    x = 153,836.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.