Home / 134,784.64-185,943.60-81,038.56

Finding the Fourth Proportional to 134,784.64, 185,943.60 and 81,038.56

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Solution

The fourth proportional to 134,784.64, 185,943.60 and 81,038.56 is: 111,797.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,784.64 : 185,943.60 = 81,038.56 : x
  2. Step 2: Convert to fraction form
    134,784.64/185,943.60 = 81,038.56/x
  3. Step 3: Cross multiply
    134,784.64x = 185,943.60 × 81,038.56
  4. Step 4: Simplify right side
    134,784.64x = 15,068,601,585.22
  5. Step 5: Solve for x
    x = 15,068,601,585.22/134,784.64
  6. Step 6: Final answer
    x = 111,797.62

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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.