Home / 105,296.81-145,308.26-57,549.74

Finding the Fourth Proportional to 105,296.81, 145,308.26 and 57,549.74

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Solution

The fourth proportional to 105,296.81, 145,308.26 and 57,549.74 is: 79,417.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,296.81 : 145,308.26 = 57,549.74 : x
  2. Step 2: Convert to fraction form
    105,296.81/145,308.26 = 57,549.74/x
  3. Step 3: Cross multiply
    105,296.81x = 145,308.26 × 57,549.74
  4. Step 4: Simplify right side
    105,296.81x = 8,362,451,568.56
  5. Step 5: Solve for x
    x = 8,362,451,568.56/105,296.81
  6. Step 6: Final answer
    x = 79,417.90

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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.