Home / 156,214.10-215,583.30-91,686.12

Finding the Fourth Proportional to 156,214.10, 215,583.30 and 91,686.12

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Solution

The fourth proportional to 156,214.10, 215,583.30 and 91,686.12 is: 126,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,214.10 : 215,583.30 = 91,686.12 : x
  2. Step 2: Convert to fraction form
    156,214.10/215,583.30 = 91,686.12/x
  3. Step 3: Cross multiply
    156,214.10x = 215,583.30 × 91,686.12
  4. Step 4: Simplify right side
    156,214.10x = 19,765,996,313.80
  5. Step 5: Solve for x
    x = 19,765,996,313.80/156,214.10
  6. Step 6: Final answer
    x = 126,531.45

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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.