Home / 136,256.96-188,032.80-76,640.96

Finding the Fourth Proportional to 136,256.96, 188,032.80 and 76,640.96

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Solution

The fourth proportional to 136,256.96, 188,032.80 and 76,640.96 is: 105,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,256.96 : 188,032.80 = 76,640.96 : x
  2. Step 2: Convert to fraction form
    136,256.96/188,032.80 = 76,640.96/x
  3. Step 3: Cross multiply
    136,256.96x = 188,032.80 × 76,640.96
  4. Step 4: Simplify right side
    136,256.96x = 14,411,014,303.49
  5. Step 5: Solve for x
    x = 14,411,014,303.49/136,256.96
  6. Step 6: Final answer
    x = 105,763.51

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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.