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Finding the Fourth Proportional to 160,396.54, 221,343.76 and 87,799.34

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Solution

The fourth proportional to 160,396.54, 221,343.76 and 87,799.34 is: 121,161.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,396.54 : 221,343.76 = 87,799.34 : x
  2. Step 2: Convert to fraction form
    160,396.54/221,343.76 = 87,799.34/x
  3. Step 3: Cross multiply
    160,396.54x = 221,343.76 × 87,799.34
  4. Step 4: Simplify right side
    160,396.54x = 19,433,836,041.12
  5. Step 5: Solve for x
    x = 19,433,836,041.12/160,396.54
  6. Step 6: Final answer
    x = 121,161.19

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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.