Home / 160,243.05-221,128.74-87,644.78

Finding the Fourth Proportional to 160,243.05, 221,128.74 and 87,644.78

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Solution

The fourth proportional to 160,243.05, 221,128.74 and 87,644.78 is: 120,946.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,243.05 : 221,128.74 = 87,644.78 : x
  2. Step 2: Convert to fraction form
    160,243.05/221,128.74 = 87,644.78/x
  3. Step 3: Cross multiply
    160,243.05x = 221,128.74 × 87,644.78
  4. Step 4: Simplify right side
    160,243.05x = 19,380,778,663.33
  5. Step 5: Solve for x
    x = 19,380,778,663.33/160,243.05
  6. Step 6: Final answer
    x = 120,946.14

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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.