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Finding the Fourth Proportional to 160,474.41, 221,458.02 and 87,880.32

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Solution

The fourth proportional to 160,474.41, 221,458.02 and 87,880.32 is: 121,276.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,474.41 : 221,458.02 = 87,880.32 : x
  2. Step 2: Convert to fraction form
    160,474.41/221,458.02 = 87,880.32/x
  3. Step 3: Cross multiply
    160,474.41x = 221,458.02 × 87,880.32
  4. Step 4: Simplify right side
    160,474.41x = 19,461,801,664.17
  5. Step 5: Solve for x
    x = 19,461,801,664.17/160,474.41
  6. Step 6: Final answer
    x = 121,276.67

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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.