Home / 118,738.71-163,784.03-72,776.88

Finding the Fourth Proportional to 118,738.71, 163,784.03 and 72,776.88

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Solution

The fourth proportional to 118,738.71, 163,784.03 and 72,776.88 is: 100,385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,738.71 : 163,784.03 = 72,776.88 : x
  2. Step 2: Convert to fraction form
    118,738.71/163,784.03 = 72,776.88/x
  3. Step 3: Cross multiply
    118,738.71x = 163,784.03 × 72,776.88
  4. Step 4: Simplify right side
    118,738.71x = 11,919,690,333.34
  5. Step 5: Solve for x
    x = 11,919,690,333.34/118,738.71
  6. Step 6: Final answer
    x = 100,385.88

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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.