Home / 117,734.16-162,520.20-72,430.50

Finding the Fourth Proportional to 117,734.16, 162,520.20 and 72,430.50

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Solution

The fourth proportional to 117,734.16, 162,520.20 and 72,430.50 is: 99,983.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,734.16 : 162,520.20 = 72,430.50 : x
  2. Step 2: Convert to fraction form
    117,734.16/162,520.20 = 72,430.50/x
  3. Step 3: Cross multiply
    117,734.16x = 162,520.20 × 72,430.50
  4. Step 4: Simplify right side
    117,734.16x = 11,771,419,346.10
  5. Step 5: Solve for x
    x = 11,771,419,346.10/117,734.16
  6. Step 6: Final answer
    x = 99,983.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.