Home / 115,140.85-172,734.56-48,581.12

Finding the Fourth Proportional to 115,140.85, 172,734.56 and 48,581.12

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Solution

The fourth proportional to 115,140.85, 172,734.56 and 48,581.12 is: 72,881.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,140.85 : 172,734.56 = 48,581.12 : x
  2. Step 2: Convert to fraction form
    115,140.85/172,734.56 = 48,581.12/x
  3. Step 3: Cross multiply
    115,140.85x = 172,734.56 × 48,581.12
  4. Step 4: Simplify right side
    115,140.85x = 8,391,638,387.51
  5. Step 5: Solve for x
    x = 8,391,638,387.51/115,140.85
  6. Step 6: Final answer
    x = 72,881.50

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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.