Home / 103,440.30-155,196.90-99,795.30

Finding the Fourth Proportional to 103,440.30, 155,196.90 and 99,795.30

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Solution

The fourth proportional to 103,440.30, 155,196.90 and 99,795.30 is: 149,728.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,440.30 : 155,196.90 = 99,795.30 : x
  2. Step 2: Convert to fraction form
    103,440.30/155,196.90 = 99,795.30/x
  3. Step 3: Cross multiply
    103,440.30x = 155,196.90 × 99,795.30
  4. Step 4: Simplify right side
    103,440.30x = 15,487,921,194.57
  5. Step 5: Solve for x
    x = 15,487,921,194.57/103,440.30
  6. Step 6: Final answer
    x = 149,728.12

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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.