Home / 109,256.16-163,962-84,321.12

Finding the Fourth Proportional to 109,256.16, 163,962 and 84,321.12

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Solution

The fourth proportional to 109,256.16, 163,962 and 84,321.12 is: 126,541.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,256.16 : 163,962 = 84,321.12 : x
  2. Step 2: Convert to fraction form
    109,256.16/163,962 = 84,321.12/x
  3. Step 3: Cross multiply
    109,256.16x = 163,962 × 84,321.12
  4. Step 4: Simplify right side
    109,256.16x = 13,825,459,477.44
  5. Step 5: Solve for x
    x = 13,825,459,477.44/109,256.16
  6. Step 6: Final answer
    x = 126,541.69

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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.