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Finding the Fourth Proportional to 160,218.90, 221,102.76 and 87,623.22

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Solution

The fourth proportional to 160,218.90, 221,102.76 and 87,623.22 is: 120,920.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,218.90 : 221,102.76 = 87,623.22 : x
  2. Step 2: Convert to fraction form
    160,218.90/221,102.76 = 87,623.22/x
  3. Step 3: Cross multiply
    160,218.90x = 221,102.76 × 87,623.22
  4. Step 4: Simplify right side
    160,218.90x = 19,373,735,782.09
  5. Step 5: Solve for x
    x = 19,373,735,782.09/160,218.90
  6. Step 6: Final answer
    x = 120,920.41

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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.