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Finding the Fourth Proportional to 172,373.40, 258,568.20 and 54,048.60

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Solution

The fourth proportional to 172,373.40, 258,568.20 and 54,048.60 is: 81,075.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,373.40 : 258,568.20 = 54,048.60 : x
  2. Step 2: Convert to fraction form
    172,373.40/258,568.20 = 54,048.60/x
  3. Step 3: Cross multiply
    172,373.40x = 258,568.20 × 54,048.60
  4. Step 4: Simplify right side
    172,373.40x = 13,975,249,214.52
  5. Step 5: Solve for x
    x = 13,975,249,214.52/172,373.40
  6. Step 6: Final answer
    x = 81,075.44

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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.