Home / 151,243.44-208,728-87,582.36

Finding the Fourth Proportional to 151,243.44, 208,728 and 87,582.36

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Solution

The fourth proportional to 151,243.44, 208,728 and 87,582.36 is: 120,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,243.44 : 208,728 = 87,582.36 : x
  2. Step 2: Convert to fraction form
    151,243.44/208,728 = 87,582.36/x
  3. Step 3: Cross multiply
    151,243.44x = 208,728 × 87,582.36
  4. Step 4: Simplify right side
    151,243.44x = 18,280,890,838.08
  5. Step 5: Solve for x
    x = 18,280,890,838.08/151,243.44
  6. Step 6: Final answer
    x = 120,870.64

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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.