Home / 102,720.32-153,817.43-71,086.58

Finding the Fourth Proportional to 102,720.32, 153,817.43 and 71,086.58

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Solution

The fourth proportional to 102,720.32, 153,817.43 and 71,086.58 is: 106,447.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,720.32 : 153,817.43 = 71,086.58 : x
  2. Step 2: Convert to fraction form
    102,720.32/153,817.43 = 71,086.58/x
  3. Step 3: Cross multiply
    102,720.32x = 153,817.43 × 71,086.58
  4. Step 4: Simplify right side
    102,720.32x = 10,934,353,918.57
  5. Step 5: Solve for x
    x = 10,934,353,918.57/102,720.32
  6. Step 6: Final answer
    x = 106,447.82

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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.