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Finding the Fourth Proportional to 136,462.50, 188,319.47 and 79,875.09

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Solution

The fourth proportional to 136,462.50, 188,319.47 and 79,875.09 is: 110,228.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,462.50 : 188,319.47 = 79,875.09 : x
  2. Step 2: Convert to fraction form
    136,462.50/188,319.47 = 79,875.09/x
  3. Step 3: Cross multiply
    136,462.50x = 188,319.47 × 79,875.09
  4. Step 4: Simplify right side
    136,462.50x = 15,042,034,215.63
  5. Step 5: Solve for x
    x = 15,042,034,215.63/136,462.50
  6. Step 6: Final answer
    x = 110,228.34

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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.