Home / 128,701.71-193,125.06-100,542.77

Finding the Fourth Proportional to 128,701.71, 193,125.06 and 100,542.77

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Solution

The fourth proportional to 128,701.71, 193,125.06 and 100,542.77 is: 150,870.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,701.71 : 193,125.06 = 100,542.77 : x
  2. Step 2: Convert to fraction form
    128,701.71/193,125.06 = 100,542.77/x
  3. Step 3: Cross multiply
    128,701.71x = 193,125.06 × 100,542.77
  4. Step 4: Simplify right side
    128,701.71x = 19,417,328,247.41
  5. Step 5: Solve for x
    x = 19,417,328,247.41/128,701.71
  6. Step 6: Final answer
    x = 150,870.79

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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.