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Finding the Fourth Proportional to 168,551.80, 252,827.70 and 155,721.40

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Solution

The fourth proportional to 168,551.80, 252,827.70 and 155,721.40 is: 233,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,551.80 : 252,827.70 = 155,721.40 : x
  2. Step 2: Convert to fraction form
    168,551.80/252,827.70 = 155,721.40/x
  3. Step 3: Cross multiply
    168,551.80x = 252,827.70 × 155,721.40
  4. Step 4: Simplify right side
    168,551.80x = 39,370,683,402.78
  5. Step 5: Solve for x
    x = 39,370,683,402.78/168,551.80
  6. Step 6: Final answer
    x = 233,582.10

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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.