Home / 135,541.88-187,042.77-78,183.57

Finding the Fourth Proportional to 135,541.88, 187,042.77 and 78,183.57

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Solution

The fourth proportional to 135,541.88, 187,042.77 and 78,183.57 is: 107,890.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,541.88 : 187,042.77 = 78,183.57 : x
  2. Step 2: Convert to fraction form
    135,541.88/187,042.77 = 78,183.57/x
  3. Step 3: Cross multiply
    135,541.88x = 187,042.77 × 78,183.57
  4. Step 4: Simplify right side
    135,541.88x = 14,623,671,501.29
  5. Step 5: Solve for x
    x = 14,623,671,501.29/135,541.88
  6. Step 6: Final answer
    x = 107,890.43

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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.