Home / 136,735.32-188,695.17-76,308.51

Finding the Fourth Proportional to 136,735.32, 188,695.17 and 76,308.51

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Solution

The fourth proportional to 136,735.32, 188,695.17 and 76,308.51 is: 105,305.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,735.32 : 188,695.17 = 76,308.51 : x
  2. Step 2: Convert to fraction form
    136,735.32/188,695.17 = 76,308.51/x
  3. Step 3: Cross multiply
    136,735.32x = 188,695.17 × 76,308.51
  4. Step 4: Simplify right side
    136,735.32x = 14,399,047,266.90
  5. Step 5: Solve for x
    x = 14,399,047,266.90/136,735.32
  6. Step 6: Final answer
    x = 105,305.98

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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.