Home / 153,215.94-230,039.22-78,389.76

Finding the Fourth Proportional to 153,215.94, 230,039.22 and 78,389.76

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Solution

The fourth proportional to 153,215.94, 230,039.22 and 78,389.76 is: 117,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,215.94 : 230,039.22 = 78,389.76 : x
  2. Step 2: Convert to fraction form
    153,215.94/230,039.22 = 78,389.76/x
  3. Step 3: Cross multiply
    153,215.94x = 230,039.22 × 78,389.76
  4. Step 4: Simplify right side
    153,215.94x = 18,032,719,246.39
  5. Step 5: Solve for x
    x = 18,032,719,246.39/153,215.94
  6. Step 6: Final answer
    x = 117,694.80

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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.