Home / 115,983.90-173,711.79-69,139.98

Finding the Fourth Proportional to 115,983.90, 173,711.79 and 69,139.98

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Solution

The fourth proportional to 115,983.90, 173,711.79 and 69,139.98 is: 103,552.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,983.90 : 173,711.79 = 69,139.98 : x
  2. Step 2: Convert to fraction form
    115,983.90/173,711.79 = 69,139.98/x
  3. Step 3: Cross multiply
    115,983.90x = 173,711.79 × 69,139.98
  4. Step 4: Simplify right side
    115,983.90x = 12,010,429,686.36
  5. Step 5: Solve for x
    x = 12,010,429,686.36/115,983.90
  6. Step 6: Final answer
    x = 103,552.56

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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.