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Finding the Fourth Proportional to 175,021.80, 262,071.90 and 128,020.20

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Solution

The fourth proportional to 175,021.80, 262,071.90 and 128,020.20 is: 191,693.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,021.80 : 262,071.90 = 128,020.20 : x
  2. Step 2: Convert to fraction form
    175,021.80/262,071.90 = 128,020.20/x
  3. Step 3: Cross multiply
    175,021.80x = 262,071.90 × 128,020.20
  4. Step 4: Simplify right side
    175,021.80x = 33,550,497,052.38
  5. Step 5: Solve for x
    x = 33,550,497,052.38/175,021.80
  6. Step 6: Final answer
    x = 191,693.25

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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.