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Finding the Fourth Proportional to 125,357.79, 188,053.08 and 66,195.81

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Solution

The fourth proportional to 125,357.79, 188,053.08 and 66,195.81 is: 99,302.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,357.79 : 188,053.08 = 66,195.81 : x
  2. Step 2: Convert to fraction form
    125,357.79/188,053.08 = 66,195.81/x
  3. Step 3: Cross multiply
    125,357.79x = 188,053.08 × 66,195.81
  4. Step 4: Simplify right side
    125,357.79x = 12,448,325,953.59
  5. Step 5: Solve for x
    x = 12,448,325,953.59/125,357.79
  6. Step 6: Final answer
    x = 99,302.37

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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.