Home / 160,805.03-221,838.14-100,390.56

Finding the Fourth Proportional to 160,805.03, 221,838.14 and 100,390.56

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Solution

The fourth proportional to 160,805.03, 221,838.14 and 100,390.56 is: 138,493.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,805.03 : 221,838.14 = 100,390.56 : x
  2. Step 2: Convert to fraction form
    160,805.03/221,838.14 = 100,390.56/x
  3. Step 3: Cross multiply
    160,805.03x = 221,838.14 × 100,390.56
  4. Step 4: Simplify right side
    160,805.03x = 22,270,454,602.01
  5. Step 5: Solve for x
    x = 22,270,454,602.01/160,805.03
  6. Step 6: Final answer
    x = 138,493.52

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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.