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Finding the Fourth Proportional to 185,708.70, 278,673.71 and 67,389.26

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Solution

The fourth proportional to 185,708.70, 278,673.71 and 67,389.26 is: 101,124.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,708.70 : 278,673.71 = 67,389.26 : x
  2. Step 2: Convert to fraction form
    185,708.70/278,673.71 = 67,389.26/x
  3. Step 3: Cross multiply
    185,708.70x = 278,673.71 × 67,389.26
  4. Step 4: Simplify right side
    185,708.70x = 18,779,613,368.04
  5. Step 5: Solve for x
    x = 18,779,613,368.04/185,708.70
  6. Step 6: Final answer
    x = 101,124.04

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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.