Home / 115,009.30-172,513.95-36,123.40

Finding the Fourth Proportional to 115,009.30, 172,513.95 and 36,123.40

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Solution

The fourth proportional to 115,009.30, 172,513.95 and 36,123.40 is: 54,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,009.30 : 172,513.95 = 36,123.40 : x
  2. Step 2: Convert to fraction form
    115,009.30/172,513.95 = 36,123.40/x
  3. Step 3: Cross multiply
    115,009.30x = 172,513.95 × 36,123.40
  4. Step 4: Simplify right side
    115,009.30x = 6,231,790,421.43
  5. Step 5: Solve for x
    x = 6,231,790,421.43/115,009.30
  6. Step 6: Final answer
    x = 54,185.10

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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.