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Finding the Fourth Proportional to 172,173.80, 258,260.70 and 144,617.60

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Solution

The fourth proportional to 172,173.80, 258,260.70 and 144,617.60 is: 216,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,173.80 : 258,260.70 = 144,617.60 : x
  2. Step 2: Convert to fraction form
    172,173.80/258,260.70 = 144,617.60/x
  3. Step 3: Cross multiply
    172,173.80x = 258,260.70 × 144,617.60
  4. Step 4: Simplify right side
    172,173.80x = 37,349,042,608.32
  5. Step 5: Solve for x
    x = 37,349,042,608.32/172,173.80
  6. Step 6: Final answer
    x = 216,926.40

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1.5x scale

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.