Home / 128,007.30-191,733.90-92,869.50

Finding the Fourth Proportional to 128,007.30, 191,733.90 and 92,869.50

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Solution

The fourth proportional to 128,007.30, 191,733.90 and 92,869.50 is: 139,103.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,007.30 : 191,733.90 = 92,869.50 : x
  2. Step 2: Convert to fraction form
    128,007.30/191,733.90 = 92,869.50/x
  3. Step 3: Cross multiply
    128,007.30x = 191,733.90 × 92,869.50
  4. Step 4: Simplify right side
    128,007.30x = 17,806,231,426.05
  5. Step 5: Solve for x
    x = 17,806,231,426.05/128,007.30
  6. Step 6: Final answer
    x = 139,103.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.