Home / 261,001.20-391,574.70-127,885.80

Finding the Fourth Proportional to 261,001.20, 391,574.70 and 127,885.80

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Solution

The fourth proportional to 261,001.20, 391,574.70 and 127,885.80 is: 191,864.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,001.20 : 391,574.70 = 127,885.80 : x
  2. Step 2: Convert to fraction form
    261,001.20/391,574.70 = 127,885.80/x
  3. Step 3: Cross multiply
    261,001.20x = 391,574.70 × 127,885.80
  4. Step 4: Simplify right side
    261,001.20x = 50,076,843,769.26
  5. Step 5: Solve for x
    x = 50,076,843,769.26/261,001.20
  6. Step 6: Final answer
    x = 191,864.42

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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.