Home / 134,631.32-185,783.65-74,201.78

Finding the Fourth Proportional to 134,631.32, 185,783.65 and 74,201.78

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Solution

The fourth proportional to 134,631.32, 185,783.65 and 74,201.78 is: 102,394.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,631.32 : 185,783.65 = 74,201.78 : x
  2. Step 2: Convert to fraction form
    134,631.32/185,783.65 = 74,201.78/x
  3. Step 3: Cross multiply
    134,631.32x = 185,783.65 × 74,201.78
  4. Step 4: Simplify right side
    134,631.32x = 13,785,477,524.90
  5. Step 5: Solve for x
    x = 13,785,477,524.90/134,631.32
  6. Step 6: Final answer
    x = 102,394.28

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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.