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Finding the Fourth Proportional to 108,967.32, 150,378.75 and 61,219.71

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Solution

The fourth proportional to 108,967.32, 150,378.75 and 61,219.71 is: 84,485.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,967.32 : 150,378.75 = 61,219.71 : x
  2. Step 2: Convert to fraction form
    108,967.32/150,378.75 = 61,219.71/x
  3. Step 3: Cross multiply
    108,967.32x = 150,378.75 × 61,219.71
  4. Step 4: Simplify right side
    108,967.32x = 9,206,143,465.16
  5. Step 5: Solve for x
    x = 9,206,143,465.16/108,967.32
  6. Step 6: Final answer
    x = 84,485.36

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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.