Home / 160,342.07-221,340.21-99,942.80

Finding the Fourth Proportional to 160,342.07, 221,340.21 and 99,942.80

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Solution

The fourth proportional to 160,342.07, 221,340.21 and 99,942.80 is: 137,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,342.07 : 221,340.21 = 99,942.80 : x
  2. Step 2: Convert to fraction form
    160,342.07/221,340.21 = 99,942.80/x
  3. Step 3: Cross multiply
    160,342.07x = 221,340.21 × 99,942.80
  4. Step 4: Simplify right side
    160,342.07x = 22,121,360,339.99
  5. Step 5: Solve for x
    x = 22,121,360,339.99/160,342.07
  6. Step 6: Final answer
    x = 137,963.54

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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.