Home / 128,605.27-177,521.85-104,690.41

Finding the Fourth Proportional to 128,605.27, 177,521.85 and 104,690.41

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Solution

The fourth proportional to 128,605.27, 177,521.85 and 104,690.41 is: 144,510.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,605.27 : 177,521.85 = 104,690.41 : x
  2. Step 2: Convert to fraction form
    128,605.27/177,521.85 = 104,690.41/x
  3. Step 3: Cross multiply
    128,605.27x = 177,521.85 × 104,690.41
  4. Step 4: Simplify right side
    128,605.27x = 18,584,835,260.46
  5. Step 5: Solve for x
    x = 18,584,835,260.46/128,605.27
  6. Step 6: Final answer
    x = 144,510.68

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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.