Home / 136,726.12-188,623.80-85,703.98

Finding the Fourth Proportional to 136,726.12, 188,623.80 and 85,703.98

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Solution

The fourth proportional to 136,726.12, 188,623.80 and 85,703.98 is: 118,234.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,726.12 : 188,623.80 = 85,703.98 : x
  2. Step 2: Convert to fraction form
    136,726.12/188,623.80 = 85,703.98/x
  3. Step 3: Cross multiply
    136,726.12x = 188,623.80 × 85,703.98
  4. Step 4: Simplify right side
    136,726.12x = 16,165,810,382.72
  5. Step 5: Solve for x
    x = 16,165,810,382.72/136,726.12
  6. Step 6: Final answer
    x = 118,234.98

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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.