Home / 90,558,005.20-135,837,007.80-84,180,713.20

Finding the Fourth Proportional to 90,558,005.20, 135,837,007.80 and 84,180,713.20

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Solution

The fourth proportional to 90,558,005.20, 135,837,007.80 and 84,180,713.20 is: 126,271,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,558,005.20 : 135,837,007.80 = 84,180,713.20 : x
  2. Step 2: Convert to fraction form
    90,558,005.20/135,837,007.80 = 84,180,713.20/x
  3. Step 3: Cross multiply
    90,558,005.20x = 135,837,007.80 × 84,180,713.20
  4. Step 4: Simplify right side
    90,558,005.20x = 11,434,856,195,557,964
  5. Step 5: Solve for x
    x = 11,434,856,195,557,964/90,558,005.20
  6. Step 6: Final answer
    x = 126,271,069.80

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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.