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Finding the Fourth Proportional to 134,808.71, 201,786.59 and 84,715.47

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Solution

The fourth proportional to 134,808.71, 201,786.59 and 84,715.47 is: 126,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,808.71 : 201,786.59 = 84,715.47 : x
  2. Step 2: Convert to fraction form
    134,808.71/201,786.59 = 84,715.47/x
  3. Step 3: Cross multiply
    134,808.71x = 201,786.59 × 84,715.47
  4. Step 4: Simplify right side
    134,808.71x = 17,094,446,023.34
  5. Step 5: Solve for x
    x = 17,094,446,023.34/134,808.71
  6. Step 6: Final answer
    x = 126,805.21

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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.