Home / 160,839.28-221,812.80-100,415.44

Finding the Fourth Proportional to 160,839.28, 221,812.80 and 100,415.44

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Solution

The fourth proportional to 160,839.28, 221,812.80 and 100,415.44 is: 138,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,839.28 : 221,812.80 = 100,415.44 : x
  2. Step 2: Convert to fraction form
    160,839.28/221,812.80 = 100,415.44/x
  3. Step 3: Cross multiply
    160,839.28x = 221,812.80 × 100,415.44
  4. Step 4: Simplify right side
    160,839.28x = 22,273,429,909.63
  5. Step 5: Solve for x
    x = 22,273,429,909.63/160,839.28
  6. Step 6: Final answer
    x = 138,482.53

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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.