Home / 103,760.14-155,780.14-66,393.16

Finding the Fourth Proportional to 103,760.14, 155,780.14 and 66,393.16

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Solution

The fourth proportional to 103,760.14, 155,780.14 and 66,393.16 is: 99,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,760.14 : 155,780.14 = 66,393.16 : x
  2. Step 2: Convert to fraction form
    103,760.14/155,780.14 = 66,393.16/x
  3. Step 3: Cross multiply
    103,760.14x = 155,780.14 × 66,393.16
  4. Step 4: Simplify right side
    103,760.14x = 10,342,735,759.84
  5. Step 5: Solve for x
    x = 10,342,735,759.84/103,760.14
  6. Step 6: Final answer
    x = 99,679.28

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1.5x scale

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.