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Finding the Fourth Proportional to 115,173.88, 172,370.70 and 70,828.76

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Solution

The fourth proportional to 115,173.88, 172,370.70 and 70,828.76 is: 106,003.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,173.88 : 172,370.70 = 70,828.76 : x
  2. Step 2: Convert to fraction form
    115,173.88/172,370.70 = 70,828.76/x
  3. Step 3: Cross multiply
    115,173.88x = 172,370.70 × 70,828.76
  4. Step 4: Simplify right side
    115,173.88x = 12,208,802,941.33
  5. Step 5: Solve for x
    x = 12,208,802,941.33/115,173.88
  6. Step 6: Final answer
    x = 106,003.23

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1.5x scale

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.