Home / 123,916.38-185,865-39,685.35

Finding the Fourth Proportional to 123,916.38, 185,865 and 39,685.35

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Solution

The fourth proportional to 123,916.38, 185,865 and 39,685.35 is: 59,524.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,916.38 : 185,865 = 39,685.35 : x
  2. Step 2: Convert to fraction form
    123,916.38/185,865 = 39,685.35/x
  3. Step 3: Cross multiply
    123,916.38x = 185,865 × 39,685.35
  4. Step 4: Simplify right side
    123,916.38x = 7,376,117,577.75
  5. Step 5: Solve for x
    x = 7,376,117,577.75/123,916.38
  6. Step 6: Final answer
    x = 59,524.96

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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.