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Finding the Fourth Proportional to 124,358.40, 186,469.20 and 84,960

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Solution

The fourth proportional to 124,358.40, 186,469.20 and 84,960 is: 127,393.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,358.40 : 186,469.20 = 84,960 : x
  2. Step 2: Convert to fraction form
    124,358.40/186,469.20 = 84,960/x
  3. Step 3: Cross multiply
    124,358.40x = 186,469.20 × 84,960
  4. Step 4: Simplify right side
    124,358.40x = 15,842,423,232.00
  5. Step 5: Solve for x
    x = 15,842,423,232.00/124,358.40
  6. Step 6: Final answer
    x = 127,393.27

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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.