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Finding the Fourth Proportional to 115,331.60, 172,851.60 and 102,792.80

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Solution

The fourth proportional to 115,331.60, 172,851.60 and 102,792.80 is: 154,059.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,331.60 : 172,851.60 = 102,792.80 : x
  2. Step 2: Convert to fraction form
    115,331.60/172,851.60 = 102,792.80/x
  3. Step 3: Cross multiply
    115,331.60x = 172,851.60 × 102,792.80
  4. Step 4: Simplify right side
    115,331.60x = 17,767,899,948.48
  5. Step 5: Solve for x
    x = 17,767,899,948.48/115,331.60
  6. Step 6: Final answer
    x = 154,059.25

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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.