Home / 103,939.70-155,909.55-102,557.30

Finding the Fourth Proportional to 103,939.70, 155,909.55 and 102,557.30

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Solution

The fourth proportional to 103,939.70, 155,909.55 and 102,557.30 is: 153,835.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,939.70 : 155,909.55 = 102,557.30 : x
  2. Step 2: Convert to fraction form
    103,939.70/155,909.55 = 102,557.30/x
  3. Step 3: Cross multiply
    103,939.70x = 155,909.55 × 102,557.30
  4. Step 4: Simplify right side
    103,939.70x = 15,989,662,492.22
  5. Step 5: Solve for x
    x = 15,989,662,492.22/103,939.70
  6. Step 6: Final answer
    x = 153,835.95

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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.