Home / 136,438.43-188,298.88-76,018.91

Finding the Fourth Proportional to 136,438.43, 188,298.88 and 76,018.91

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Solution

The fourth proportional to 136,438.43, 188,298.88 and 76,018.91 is: 104,913.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,438.43 : 188,298.88 = 76,018.91 : x
  2. Step 2: Convert to fraction form
    136,438.43/188,298.88 = 76,018.91/x
  3. Step 3: Cross multiply
    136,438.43x = 188,298.88 × 76,018.91
  4. Step 4: Simplify right side
    136,438.43x = 14,314,274,480.28
  5. Step 5: Solve for x
    x = 14,314,274,480.28/136,438.43
  6. Step 6: Final answer
    x = 104,913.81

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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.