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Finding the Fourth Proportional to 102,785.49, 153,960.98 and 52,713.09

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Solution

The fourth proportional to 102,785.49, 153,960.98 and 52,713.09 is: 78,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,785.49 : 153,960.98 = 52,713.09 : x
  2. Step 2: Convert to fraction form
    102,785.49/153,960.98 = 52,713.09/x
  3. Step 3: Cross multiply
    102,785.49x = 153,960.98 × 52,713.09
  4. Step 4: Simplify right side
    102,785.49x = 8,115,758,731.66
  5. Step 5: Solve for x
    x = 8,115,758,731.66/102,785.49
  6. Step 6: Final answer
    x = 78,958.21

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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.