Home / 105,365.96-145,406.17-57,618.28

Finding the Fourth Proportional to 105,365.96, 145,406.17 and 57,618.28

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Solution

The fourth proportional to 105,365.96, 145,406.17 and 57,618.28 is: 79,513.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,365.96 : 145,406.17 = 57,618.28 : x
  2. Step 2: Convert to fraction form
    105,365.96/145,406.17 = 57,618.28/x
  3. Step 3: Cross multiply
    105,365.96x = 145,406.17 × 57,618.28
  4. Step 4: Simplify right side
    105,365.96x = 8,378,053,670.57
  5. Step 5: Solve for x
    x = 8,378,053,670.57/105,365.96
  6. Step 6: Final answer
    x = 79,513.86

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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.