Home / 136,611.81-188,525.30-76,186.35

Finding the Fourth Proportional to 136,611.81, 188,525.30 and 76,186.35

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Solution

The fourth proportional to 136,611.81, 188,525.30 and 76,186.35 is: 105,137.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,611.81 : 188,525.30 = 76,186.35 : x
  2. Step 2: Convert to fraction form
    136,611.81/188,525.30 = 76,186.35/x
  3. Step 3: Cross multiply
    136,611.81x = 188,525.30 × 76,186.35
  4. Step 4: Simplify right side
    136,611.81x = 14,363,054,108.72
  5. Step 5: Solve for x
    x = 14,363,054,108.72/136,611.81
  6. Step 6: Final answer
    x = 105,137.72

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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.