Home / 105,559.09-145,666.11-57,803.20

Finding the Fourth Proportional to 105,559.09, 145,666.11 and 57,803.20

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Solution

The fourth proportional to 105,559.09, 145,666.11 and 57,803.20 is: 79,765.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,559.09 : 145,666.11 = 57,803.20 : x
  2. Step 2: Convert to fraction form
    105,559.09/145,666.11 = 57,803.20/x
  3. Step 3: Cross multiply
    105,559.09x = 145,666.11 × 57,803.20
  4. Step 4: Simplify right side
    105,559.09x = 8,419,967,289.55
  5. Step 5: Solve for x
    x = 8,419,967,289.55/105,559.09
  6. Step 6: Final answer
    x = 79,765.44

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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.