Home / 124,143.72-186,135.45-53,112.70

Finding the Fourth Proportional to 124,143.72, 186,135.45 and 53,112.70

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Solution

The fourth proportional to 124,143.72, 186,135.45 and 53,112.70 is: 79,634.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,143.72 : 186,135.45 = 53,112.70 : x
  2. Step 2: Convert to fraction form
    124,143.72/186,135.45 = 53,112.70/x
  3. Step 3: Cross multiply
    124,143.72x = 186,135.45 × 53,112.70
  4. Step 4: Simplify right side
    124,143.72x = 9,886,156,315.22
  5. Step 5: Solve for x
    x = 9,886,156,315.22/124,143.72
  6. Step 6: Final answer
    x = 79,634.77

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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.