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Finding the Fourth Proportional to 163,719.54, 245,710.53 and 84,856.32

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Solution

The fourth proportional to 163,719.54, 245,710.53 and 84,856.32 is: 127,352.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,719.54 : 245,710.53 = 84,856.32 : x
  2. Step 2: Convert to fraction form
    163,719.54/245,710.53 = 84,856.32/x
  3. Step 3: Cross multiply
    163,719.54x = 245,710.53 × 84,856.32
  4. Step 4: Simplify right side
    163,719.54x = 20,850,091,361.05
  5. Step 5: Solve for x
    x = 20,850,091,361.05/163,719.54
  6. Step 6: Final answer
    x = 127,352.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.