Home / 145,750.28-218,359.08-105,669.90

Finding the Fourth Proportional to 145,750.28, 218,359.08 and 105,669.90

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Solution

The fourth proportional to 145,750.28, 218,359.08 and 105,669.90 is: 158,311.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,750.28 : 218,359.08 = 105,669.90 : x
  2. Step 2: Convert to fraction form
    145,750.28/218,359.08 = 105,669.90/x
  3. Step 3: Cross multiply
    145,750.28x = 218,359.08 × 105,669.90
  4. Step 4: Simplify right side
    145,750.28x = 23,073,982,147.69
  5. Step 5: Solve for x
    x = 23,073,982,147.69/145,750.28
  6. Step 6: Final answer
    x = 158,311.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.