Home / 103,688.70-155,241.45-93,191.10

Finding the Fourth Proportional to 103,688.70, 155,241.45 and 93,191.10

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Solution

The fourth proportional to 103,688.70, 155,241.45 and 93,191.10 is: 139,524.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.70 : 155,241.45 = 93,191.10 : x
  2. Step 2: Convert to fraction form
    103,688.70/155,241.45 = 93,191.10/x
  3. Step 3: Cross multiply
    103,688.70x = 155,241.45 × 93,191.10
  4. Step 4: Simplify right side
    103,688.70x = 14,467,121,491.10
  5. Step 5: Solve for x
    x = 14,467,121,491.10/103,688.70
  6. Step 6: Final answer
    x = 139,524.57

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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.