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Finding the Fourth Proportional to 99,563.10, 149,344.65 and 57,980.94

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Solution

The fourth proportional to 99,563.10, 149,344.65 and 57,980.94 is: 86,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,563.10 : 149,344.65 = 57,980.94 : x
  2. Step 2: Convert to fraction form
    99,563.10/149,344.65 = 57,980.94/x
  3. Step 3: Cross multiply
    99,563.10x = 149,344.65 × 57,980.94
  4. Step 4: Simplify right side
    99,563.10x = 8,659,142,672.66
  5. Step 5: Solve for x
    x = 8,659,142,672.66/99,563.10
  6. Step 6: Final answer
    x = 86,971.41

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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.