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Finding the Fourth Proportional to 108,812.88, 150,179.40 and 74,792.88

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Solution

The fourth proportional to 108,812.88, 150,179.40 and 74,792.88 is: 103,226.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,812.88 : 150,179.40 = 74,792.88 : x
  2. Step 2: Convert to fraction form
    108,812.88/150,179.40 = 74,792.88/x
  3. Step 3: Cross multiply
    108,812.88x = 150,179.40 × 74,792.88
  4. Step 4: Simplify right side
    108,812.88x = 11,232,349,842.67
  5. Step 5: Solve for x
    x = 11,232,349,842.67/108,812.88
  6. Step 6: Final answer
    x = 103,226.29

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1.5x scale

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.