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Finding the Fourth Proportional to 108,954.90, 150,420.78 and 71,294.76

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Solution

The fourth proportional to 108,954.90, 150,420.78 and 71,294.76 is: 98,428.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,954.90 : 150,420.78 = 71,294.76 : x
  2. Step 2: Convert to fraction form
    108,954.90/150,420.78 = 71,294.76/x
  3. Step 3: Cross multiply
    108,954.90x = 150,420.78 × 71,294.76
  4. Step 4: Simplify right side
    108,954.90x = 10,724,213,409.11
  5. Step 5: Solve for x
    x = 10,724,213,409.11/108,954.90
  6. Step 6: Final answer
    x = 98,428.00

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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.