Home / 103,623.88-155,337.18-66,078.52

Finding the Fourth Proportional to 103,623.88, 155,337.18 and 66,078.52

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Solution

The fourth proportional to 103,623.88, 155,337.18 and 66,078.52 is: 99,054.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.88 : 155,337.18 = 66,078.52 : x
  2. Step 2: Convert to fraction form
    103,623.88/155,337.18 = 66,078.52/x
  3. Step 3: Cross multiply
    103,623.88x = 155,337.18 × 66,078.52
  4. Step 4: Simplify right side
    103,623.88x = 10,264,450,955.37
  5. Step 5: Solve for x
    x = 10,264,450,955.37/103,623.88
  6. Step 6: Final answer
    x = 99,054.88

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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.