Home / 125,126.46-187,718.85-40,890.51

Finding the Fourth Proportional to 125,126.46, 187,718.85 and 40,890.51

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Solution

The fourth proportional to 125,126.46, 187,718.85 and 40,890.51 is: 61,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,126.46 : 187,718.85 = 40,890.51 : x
  2. Step 2: Convert to fraction form
    125,126.46/187,718.85 = 40,890.51/x
  3. Step 3: Cross multiply
    125,126.46x = 187,718.85 × 40,890.51
  4. Step 4: Simplify right side
    125,126.46x = 7,675,919,513.11
  5. Step 5: Solve for x
    x = 7,675,919,513.11/125,126.46
  6. Step 6: Final answer
    x = 61,345.29

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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.