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Finding the Fourth Proportional to 136,290.17, 188,080.41 and 75,859.52

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Solution

The fourth proportional to 136,290.17, 188,080.41 and 75,859.52 is: 104,686.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,290.17 : 188,080.41 = 75,859.52 : x
  2. Step 2: Convert to fraction form
    136,290.17/188,080.41 = 75,859.52/x
  3. Step 3: Cross multiply
    136,290.17x = 188,080.41 × 75,859.52
  4. Step 4: Simplify right side
    136,290.17x = 14,267,688,968.07
  5. Step 5: Solve for x
    x = 14,267,688,968.07/136,290.17
  6. Step 6: Final answer
    x = 104,686.12

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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.