Home / 103,432.66-155,145.89-28,557.38

Finding the Fourth Proportional to 103,432.66, 155,145.89 and 28,557.38

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Solution

The fourth proportional to 103,432.66, 155,145.89 and 28,557.38 is: 42,835.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,432.66 : 155,145.89 = 28,557.38 : x
  2. Step 2: Convert to fraction form
    103,432.66/155,145.89 = 28,557.38/x
  3. Step 3: Cross multiply
    103,432.66x = 155,145.89 × 28,557.38
  4. Step 4: Simplify right side
    103,432.66x = 4,430,559,360.44
  5. Step 5: Solve for x
    x = 4,430,559,360.44/103,432.66
  6. Step 6: Final answer
    x = 42,835.21

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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.