Home / 136,257.66-188,031.78-75,830.45

Finding the Fourth Proportional to 136,257.66, 188,031.78 and 75,830.45

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Solution

The fourth proportional to 136,257.66, 188,031.78 and 75,830.45 is: 104,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,257.66 : 188,031.78 = 75,830.45 : x
  2. Step 2: Convert to fraction form
    136,257.66/188,031.78 = 75,830.45/x
  3. Step 3: Cross multiply
    136,257.66x = 188,031.78 × 75,830.45
  4. Step 4: Simplify right side
    136,257.66x = 14,258,533,551.54
  5. Step 5: Solve for x
    x = 14,258,533,551.54/136,257.66
  6. Step 6: Final answer
    x = 104,643.90

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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.