Home / 160,815.07-221,951.36-89,218.16

Finding the Fourth Proportional to 160,815.07, 221,951.36 and 89,218.16

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Solution

The fourth proportional to 160,815.07, 221,951.36 and 89,218.16 is: 123,135.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,815.07 : 221,951.36 = 89,218.16 : x
  2. Step 2: Convert to fraction form
    160,815.07/221,951.36 = 89,218.16/x
  3. Step 3: Cross multiply
    160,815.07x = 221,951.36 × 89,218.16
  4. Step 4: Simplify right side
    160,815.07x = 19,802,090,392.85
  5. Step 5: Solve for x
    x = 19,802,090,392.85/160,815.07
  6. Step 6: Final answer
    x = 123,135.79

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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.