Home / 103,280.13-142,541.51-57,350.43

Finding the Fourth Proportional to 103,280.13, 142,541.51 and 57,350.43

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Solution

The fourth proportional to 103,280.13, 142,541.51 and 57,350.43 is: 79,151.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,280.13 : 142,541.51 = 57,350.43 : x
  2. Step 2: Convert to fraction form
    103,280.13/142,541.51 = 57,350.43/x
  3. Step 3: Cross multiply
    103,280.13x = 142,541.51 × 57,350.43
  4. Step 4: Simplify right side
    103,280.13x = 8,174,816,604.60
  5. Step 5: Solve for x
    x = 8,174,816,604.60/103,280.13
  6. Step 6: Final answer
    x = 79,151.88

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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.