Home / 137,125.12-189,233.10-76,696.80

Finding the Fourth Proportional to 137,125.12, 189,233.10 and 76,696.80

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Solution

The fourth proportional to 137,125.12, 189,233.10 and 76,696.80 is: 105,841.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,125.12 : 189,233.10 = 76,696.80 : x
  2. Step 2: Convert to fraction form
    137,125.12/189,233.10 = 76,696.80/x
  3. Step 3: Cross multiply
    137,125.12x = 189,233.10 × 76,696.80
  4. Step 4: Simplify right side
    137,125.12x = 14,513,573,224.08
  5. Step 5: Solve for x
    x = 14,513,573,224.08/137,125.12
  6. Step 6: Final answer
    x = 105,841.83

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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.