Home / 136,145.23-187,866.03-75,706.12

Finding the Fourth Proportional to 136,145.23, 187,866.03 and 75,706.12

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Solution

The fourth proportional to 136,145.23, 187,866.03 and 75,706.12 is: 104,466.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,145.23 : 187,866.03 = 75,706.12 : x
  2. Step 2: Convert to fraction form
    136,145.23/187,866.03 = 75,706.12/x
  3. Step 3: Cross multiply
    136,145.23x = 187,866.03 × 75,706.12
  4. Step 4: Simplify right side
    136,145.23x = 14,222,608,201.46
  5. Step 5: Solve for x
    x = 14,222,608,201.46/136,145.23
  6. Step 6: Final answer
    x = 104,466.44

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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.