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Finding the Fourth Proportional to 108,874.80, 150,263.64 and 66,457.92

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Solution

The fourth proportional to 108,874.80, 150,263.64 and 66,457.92 is: 91,721.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,874.80 : 150,263.64 = 66,457.92 : x
  2. Step 2: Convert to fraction form
    108,874.80/150,263.64 = 66,457.92/x
  3. Step 3: Cross multiply
    108,874.80x = 150,263.64 × 66,457.92
  4. Step 4: Simplify right side
    108,874.80x = 9,986,208,966.03
  5. Step 5: Solve for x
    x = 9,986,208,966.03/108,874.80
  6. Step 6: Final answer
    x = 91,721.95

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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.