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Finding the Fourth Proportional to 108,728.15, 150,042.99 and 60,980.46

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Solution

The fourth proportional to 108,728.15, 150,042.99 and 60,980.46 is: 84,152.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,728.15 : 150,042.99 = 60,980.46 : x
  2. Step 2: Convert to fraction form
    108,728.15/150,042.99 = 60,980.46/x
  3. Step 3: Cross multiply
    108,728.15x = 150,042.99 × 60,980.46
  4. Step 4: Simplify right side
    108,728.15x = 9,149,690,549.98
  5. Step 5: Solve for x
    x = 9,149,690,549.98/108,728.15
  6. Step 6: Final answer
    x = 84,152.00

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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.