Home / 105,356.92-145,390.44-57,609.76

Finding the Fourth Proportional to 105,356.92, 145,390.44 and 57,609.76

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Solution

The fourth proportional to 105,356.92, 145,390.44 and 57,609.76 is: 79,500.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,356.92 : 145,390.44 = 57,609.76 : x
  2. Step 2: Convert to fraction form
    105,356.92/145,390.44 = 57,609.76/x
  3. Step 3: Cross multiply
    105,356.92x = 145,390.44 × 57,609.76
  4. Step 4: Simplify right side
    105,356.92x = 8,375,908,354.69
  5. Step 5: Solve for x
    x = 8,375,908,354.69/105,356.92
  6. Step 6: Final answer
    x = 79,500.32

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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.