Home / 103,688.14-155,535.05-28,808.50

Finding the Fourth Proportional to 103,688.14, 155,535.05 and 28,808.50

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Solution

The fourth proportional to 103,688.14, 155,535.05 and 28,808.50 is: 43,213.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.14 : 155,535.05 = 28,808.50 : x
  2. Step 2: Convert to fraction form
    103,688.14/155,535.05 = 28,808.50/x
  3. Step 3: Cross multiply
    103,688.14x = 155,535.05 × 28,808.50
  4. Step 4: Simplify right side
    103,688.14x = 4,480,731,487.93
  5. Step 5: Solve for x
    x = 4,480,731,487.93/103,688.14
  6. Step 6: Final answer
    x = 43,213.54

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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.