Home / 105,555.08-145,660.61-57,799.20

Finding the Fourth Proportional to 105,555.08, 145,660.61 and 57,799.20

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Solution

The fourth proportional to 105,555.08, 145,660.61 and 57,799.20 is: 79,759.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,555.08 : 145,660.61 = 57,799.20 : x
  2. Step 2: Convert to fraction form
    105,555.08/145,660.61 = 57,799.20/x
  3. Step 3: Cross multiply
    105,555.08x = 145,660.61 × 57,799.20
  4. Step 4: Simplify right side
    105,555.08x = 8,419,066,440.52
  5. Step 5: Solve for x
    x = 8,419,066,440.52/105,555.08
  6. Step 6: Final answer
    x = 79,759.94

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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.