Home / 114,769.40-172,154.10-81,308.30

Finding the Fourth Proportional to 114,769.40, 172,154.10 and 81,308.30

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Solution

The fourth proportional to 114,769.40, 172,154.10 and 81,308.30 is: 121,962.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,769.40 : 172,154.10 = 81,308.30 : x
  2. Step 2: Convert to fraction form
    114,769.40/172,154.10 = 81,308.30/x
  3. Step 3: Cross multiply
    114,769.40x = 172,154.10 × 81,308.30
  4. Step 4: Simplify right side
    114,769.40x = 13,997,557,209.03
  5. Step 5: Solve for x
    x = 13,997,557,209.03/114,769.40
  6. Step 6: Final answer
    x = 121,962.45

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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.