Home / 118,479.71-163,513.18-64,772.66

Finding the Fourth Proportional to 118,479.71, 163,513.18 and 64,772.66

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Solution

The fourth proportional to 118,479.71, 163,513.18 and 64,772.66 is: 89,392.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,479.71 : 163,513.18 = 64,772.66 : x
  2. Step 2: Convert to fraction form
    118,479.71/163,513.18 = 64,772.66/x
  3. Step 3: Cross multiply
    118,479.71x = 163,513.18 × 64,772.66
  4. Step 4: Simplify right side
    118,479.71x = 10,591,184,103.41
  5. Step 5: Solve for x
    x = 10,591,184,103.41/118,479.71
  6. Step 6: Final answer
    x = 89,392.39

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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.