Home / 136,971.76-189,042.72-83,273.60

Finding the Fourth Proportional to 136,971.76, 189,042.72 and 83,273.60

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Solution

The fourth proportional to 136,971.76, 189,042.72 and 83,273.60 is: 114,930.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,971.76 : 189,042.72 = 83,273.60 : x
  2. Step 2: Convert to fraction form
    136,971.76/189,042.72 = 83,273.60/x
  3. Step 3: Cross multiply
    136,971.76x = 189,042.72 × 83,273.60
  4. Step 4: Simplify right side
    136,971.76x = 15,742,267,848.19
  5. Step 5: Solve for x
    x = 15,742,267,848.19/136,971.76
  6. Step 6: Final answer
    x = 114,930.76

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1.5x scale

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.