Home / 160,243.55-221,129.43-87,645.28

Finding the Fourth Proportional to 160,243.55, 221,129.43 and 87,645.28

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Solution

The fourth proportional to 160,243.55, 221,129.43 and 87,645.28 is: 120,946.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,243.55 : 221,129.43 = 87,645.28 : x
  2. Step 2: Convert to fraction form
    160,243.55/221,129.43 = 87,645.28/x
  3. Step 3: Cross multiply
    160,243.55x = 221,129.43 × 87,645.28
  4. Step 4: Simplify right side
    160,243.55x = 19,380,949,702.94
  5. Step 5: Solve for x
    x = 19,380,949,702.94/160,243.55
  6. Step 6: Final answer
    x = 120,946.83

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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.