Home / 191,279.76-263,955.60-105,237.12

Finding the Fourth Proportional to 191,279.76, 263,955.60 and 105,237.12

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Solution

The fourth proportional to 191,279.76, 263,955.60 and 105,237.12 is: 145,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,279.76 : 263,955.60 = 105,237.12 : x
  2. Step 2: Convert to fraction form
    191,279.76/263,955.60 = 105,237.12/x
  3. Step 3: Cross multiply
    191,279.76x = 263,955.60 × 105,237.12
  4. Step 4: Simplify right side
    191,279.76x = 27,777,927,151.87
  5. Step 5: Solve for x
    x = 27,777,927,151.87/191,279.76
  6. Step 6: Final answer
    x = 145,221.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.