Home / 103,627.65-155,441.48-78,744.45

Finding the Fourth Proportional to 103,627.65, 155,441.48 and 78,744.45

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Solution

The fourth proportional to 103,627.65, 155,441.48 and 78,744.45 is: 118,116.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,627.65 : 155,441.48 = 78,744.45 : x
  2. Step 2: Convert to fraction form
    103,627.65/155,441.48 = 78,744.45/x
  3. Step 3: Cross multiply
    103,627.65x = 155,441.48 × 78,744.45
  4. Step 4: Simplify right side
    103,627.65x = 12,240,153,456.06
  5. Step 5: Solve for x
    x = 12,240,153,456.06/103,627.65
  6. Step 6: Final answer
    x = 118,116.68

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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.