Home / 145,428.20-218,156.70-50,643.80

Finding the Fourth Proportional to 145,428.20, 218,156.70 and 50,643.80

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Solution

The fourth proportional to 145,428.20, 218,156.70 and 50,643.80 is: 75,970.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,428.20 : 218,156.70 = 50,643.80 : x
  2. Step 2: Convert to fraction form
    145,428.20/218,156.70 = 50,643.80/x
  3. Step 3: Cross multiply
    145,428.20x = 218,156.70 × 50,643.80
  4. Step 4: Simplify right side
    145,428.20x = 11,048,284,283.46
  5. Step 5: Solve for x
    x = 11,048,284,283.46/145,428.20
  6. Step 6: Final answer
    x = 75,970.71

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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.