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Finding the Fourth Proportional to 124,328.25, 186,271.25 and 71,628.84

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Solution

The fourth proportional to 124,328.25, 186,271.25 and 71,628.84 is: 107,315.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,328.25 : 186,271.25 = 71,628.84 : x
  2. Step 2: Convert to fraction form
    124,328.25/186,271.25 = 71,628.84/x
  3. Step 3: Cross multiply
    124,328.25x = 186,271.25 × 71,628.84
  4. Step 4: Simplify right side
    124,328.25x = 13,342,393,204.71
  5. Step 5: Solve for x
    x = 13,342,393,204.71/124,328.25
  6. Step 6: Final answer
    x = 107,315.86

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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.