Home / 103,433.06-155,146.50-28,557.78

Finding the Fourth Proportional to 103,433.06, 155,146.50 and 28,557.78

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Solution

The fourth proportional to 103,433.06, 155,146.50 and 28,557.78 is: 42,835.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,433.06 : 155,146.50 = 28,557.78 : x
  2. Step 2: Convert to fraction form
    103,433.06/155,146.50 = 28,557.78/x
  3. Step 3: Cross multiply
    103,433.06x = 155,146.50 × 28,557.78
  4. Step 4: Simplify right side
    103,433.06x = 4,430,639,614.77
  5. Step 5: Solve for x
    x = 4,430,639,614.77/103,433.06
  6. Step 6: Final answer
    x = 42,835.82

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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.