Home / 103,696.10-155,544.15-72,039.28

Finding the Fourth Proportional to 103,696.10, 155,544.15 and 72,039.28

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Solution

The fourth proportional to 103,696.10, 155,544.15 and 72,039.28 is: 108,058.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,696.10 : 155,544.15 = 72,039.28 : x
  2. Step 2: Convert to fraction form
    103,696.10/155,544.15 = 72,039.28/x
  3. Step 3: Cross multiply
    103,696.10x = 155,544.15 × 72,039.28
  4. Step 4: Simplify right side
    103,696.10x = 11,205,288,574.21
  5. Step 5: Solve for x
    x = 11,205,288,574.21/103,696.10
  6. Step 6: Final answer
    x = 108,058.92

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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.