Home / 114,774.72-172,130.40-81,396.48

Finding the Fourth Proportional to 114,774.72, 172,130.40 and 81,396.48

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Solution

The fourth proportional to 114,774.72, 172,130.40 and 81,396.48 is: 122,072.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,774.72 : 172,130.40 = 81,396.48 : x
  2. Step 2: Convert to fraction form
    114,774.72/172,130.40 = 81,396.48/x
  3. Step 3: Cross multiply
    114,774.72x = 172,130.40 × 81,396.48
  4. Step 4: Simplify right side
    114,774.72x = 14,010,808,660.99
  5. Step 5: Solve for x
    x = 14,010,808,660.99/114,774.72
  6. Step 6: Final answer
    x = 122,072.25

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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.