Home / 105,666.75-145,820.25-57,921.84

Finding the Fourth Proportional to 105,666.75, 145,820.25 and 57,921.84

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Solution

The fourth proportional to 105,666.75, 145,820.25 and 57,921.84 is: 79,932.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,666.75 : 145,820.25 = 57,921.84 : x
  2. Step 2: Convert to fraction form
    105,666.75/145,820.25 = 57,921.84/x
  3. Step 3: Cross multiply
    105,666.75x = 145,820.25 × 57,921.84
  4. Step 4: Simplify right side
    105,666.75x = 8,446,177,189.26
  5. Step 5: Solve for x
    x = 8,446,177,189.26/105,666.75
  6. Step 6: Final answer
    x = 79,932.21

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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.