Home / 115,510.37-159,479.28-103,389.83

Finding the Fourth Proportional to 115,510.37, 159,479.28 and 103,389.83

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Solution

The fourth proportional to 115,510.37, 159,479.28 and 103,389.83 is: 142,745.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,510.37 : 159,479.28 = 103,389.83 : x
  2. Step 2: Convert to fraction form
    115,510.37/159,479.28 = 103,389.83/x
  3. Step 3: Cross multiply
    115,510.37x = 159,479.28 × 103,389.83
  4. Step 4: Simplify right side
    115,510.37x = 16,488,536,345.44
  5. Step 5: Solve for x
    x = 16,488,536,345.44/115,510.37
  6. Step 6: Final answer
    x = 142,745.07

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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.