Home / 136,537.47-188,428.10-76,108.55

Finding the Fourth Proportional to 136,537.47, 188,428.10 and 76,108.55

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Solution

The fourth proportional to 136,537.47, 188,428.10 and 76,108.55 is: 105,033.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,537.47 : 188,428.10 = 76,108.55 : x
  2. Step 2: Convert to fraction form
    136,537.47/188,428.10 = 76,108.55/x
  3. Step 3: Cross multiply
    136,537.47x = 188,428.10 × 76,108.55
  4. Step 4: Simplify right side
    136,537.47x = 14,340,988,147.57
  5. Step 5: Solve for x
    x = 14,340,988,147.57/136,537.47
  6. Step 6: Final answer
    x = 105,033.35

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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.