Home / 221,120.64-305,154.72-125,643.52

Finding the Fourth Proportional to 221,120.64, 305,154.72 and 125,643.52

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Solution

The fourth proportional to 221,120.64, 305,154.72 and 125,643.52 is: 173,392.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,120.64 : 305,154.72 = 125,643.52 : x
  2. Step 2: Convert to fraction form
    221,120.64/305,154.72 = 125,643.52/x
  3. Step 3: Cross multiply
    221,120.64x = 305,154.72 × 125,643.52
  4. Step 4: Simplify right side
    221,120.64x = 38,340,713,165.41
  5. Step 5: Solve for x
    x = 38,340,713,165.41/221,120.64
  6. Step 6: Final answer
    x = 173,392.74

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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.