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Finding the Fourth Proportional to 136,648.88, 188,576.15 and 75,397.19

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Solution

The fourth proportional to 136,648.88, 188,576.15 and 75,397.19 is: 104,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,648.88 : 188,576.15 = 75,397.19 : x
  2. Step 2: Convert to fraction form
    136,648.88/188,576.15 = 75,397.19/x
  3. Step 3: Cross multiply
    136,648.88x = 188,576.15 × 75,397.19
  4. Step 4: Simplify right side
    136,648.88x = 14,218,111,445.63
  5. Step 5: Solve for x
    x = 14,218,111,445.63/136,648.88
  6. Step 6: Final answer
    x = 104,048.50

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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.