Home / 136,731.82-188,690.34-76,305.02

Finding the Fourth Proportional to 136,731.82, 188,690.34 and 76,305.02

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Solution

The fourth proportional to 136,731.82, 188,690.34 and 76,305.02 is: 105,301.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,731.82 : 188,690.34 = 76,305.02 : x
  2. Step 2: Convert to fraction form
    136,731.82/188,690.34 = 76,305.02/x
  3. Step 3: Cross multiply
    136,731.82x = 188,690.34 × 76,305.02
  4. Step 4: Simplify right side
    136,731.82x = 14,398,020,167.51
  5. Step 5: Solve for x
    x = 14,398,020,167.51/136,731.82
  6. Step 6: Final answer
    x = 105,301.17

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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.