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Finding the Fourth Proportional to 160,239.87, 221,122.03 and 87,628.32

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Solution

The fourth proportional to 160,239.87, 221,122.03 and 87,628.32 is: 120,922.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,239.87 : 221,122.03 = 87,628.32 : x
  2. Step 2: Convert to fraction form
    160,239.87/221,122.03 = 87,628.32/x
  3. Step 3: Cross multiply
    160,239.87x = 221,122.03 × 87,628.32
  4. Step 4: Simplify right side
    160,239.87x = 19,376,551,391.71
  5. Step 5: Solve for x
    x = 19,376,551,391.71/160,239.87
  6. Step 6: Final answer
    x = 120,922.16

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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.