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Finding the Fourth Proportional to 105,353.94, 145,393.84 and 57,606.78

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Solution

The fourth proportional to 105,353.94, 145,393.84 and 57,606.78 is: 79,500.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,353.94 : 145,393.84 = 57,606.78 : x
  2. Step 2: Convert to fraction form
    105,353.94/145,393.84 = 57,606.78/x
  3. Step 3: Cross multiply
    105,353.94x = 145,393.84 × 57,606.78
  4. Step 4: Simplify right side
    105,353.94x = 8,375,670,954.24
  5. Step 5: Solve for x
    x = 8,375,670,954.24/105,353.94
  6. Step 6: Final answer
    x = 79,500.31

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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.