Home / 103,476.90-155,215.35-76,904.85

Finding the Fourth Proportional to 103,476.90, 155,215.35 and 76,904.85

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Solution

The fourth proportional to 103,476.90, 155,215.35 and 76,904.85 is: 115,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,476.90 : 155,215.35 = 76,904.85 : x
  2. Step 2: Convert to fraction form
    103,476.90/155,215.35 = 76,904.85/x
  3. Step 3: Cross multiply
    103,476.90x = 155,215.35 × 76,904.85
  4. Step 4: Simplify right side
    103,476.90x = 11,936,813,209.45
  5. Step 5: Solve for x
    x = 11,936,813,209.45/103,476.90
  6. Step 6: Final answer
    x = 115,357.28

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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.