Home / 100,930.04-139,283.88-57,911.24

Finding the Fourth Proportional to 100,930.04, 139,283.88 and 57,911.24

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Solution

The fourth proportional to 100,930.04, 139,283.88 and 57,911.24 is: 79,917.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,930.04 : 139,283.88 = 57,911.24 : x
  2. Step 2: Convert to fraction form
    100,930.04/139,283.88 = 57,911.24/x
  3. Step 3: Cross multiply
    100,930.04x = 139,283.88 × 57,911.24
  4. Step 4: Simplify right side
    100,930.04x = 8,066,102,202.81
  5. Step 5: Solve for x
    x = 8,066,102,202.81/100,930.04
  6. Step 6: Final answer
    x = 79,917.75

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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.