Home / 160,818.21-221,783.85-100,394.42

Finding the Fourth Proportional to 160,818.21, 221,783.85 and 100,394.42

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Solution

The fourth proportional to 160,818.21, 221,783.85 and 100,394.42 is: 138,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,818.21 : 221,783.85 = 100,394.42 : x
  2. Step 2: Convert to fraction form
    160,818.21/221,783.85 = 100,394.42/x
  3. Step 3: Cross multiply
    160,818.21x = 221,783.85 × 100,394.42
  4. Step 4: Simplify right side
    160,818.21x = 22,265,859,877.20
  5. Step 5: Solve for x
    x = 22,265,859,877.20/160,818.21
  6. Step 6: Final answer
    x = 138,453.60

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1.5x scale

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.