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Finding the Fourth Proportional to 116,240, 174,360 and 28,688

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Solution

The fourth proportional to 116,240, 174,360 and 28,688 is: 43,032

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,240 : 174,360 = 28,688 : x
  2. Step 2: Convert to fraction form
    116,240/174,360 = 28,688/x
  3. Step 3: Cross multiply
    116,240x = 174,360 × 28,688
  4. Step 4: Simplify right side
    116,240x = 5,002,039,680
  5. Step 5: Solve for x
    x = 5,002,039,680/116,240
  6. Step 6: Final answer
    x = 43,032

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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.