Home / 111,428.57-153,794.07-75,630.12

Finding the Fourth Proportional to 111,428.57, 153,794.07 and 75,630.12

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Solution

The fourth proportional to 111,428.57, 153,794.07 and 75,630.12 is: 104,384.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,428.57 : 153,794.07 = 75,630.12 : x
  2. Step 2: Convert to fraction form
    111,428.57/153,794.07 = 75,630.12/x
  3. Step 3: Cross multiply
    111,428.57x = 153,794.07 × 75,630.12
  4. Step 4: Simplify right side
    111,428.57x = 11,631,463,969.39
  5. Step 5: Solve for x
    x = 11,631,463,969.39/111,428.57
  6. Step 6: Final answer
    x = 104,384.94

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1.5x scale

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.