Home / 156,190.17-215,463.04-91,617.18

Finding the Fourth Proportional to 156,190.17, 215,463.04 and 91,617.18

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Solution

The fourth proportional to 156,190.17, 215,463.04 and 91,617.18 is: 126,385.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,190.17 : 215,463.04 = 91,617.18 : x
  2. Step 2: Convert to fraction form
    156,190.17/215,463.04 = 91,617.18/x
  3. Step 3: Cross multiply
    156,190.17x = 215,463.04 × 91,617.18
  4. Step 4: Simplify right side
    156,190.17x = 19,740,115,082.00
  5. Step 5: Solve for x
    x = 19,740,115,082.00/156,190.17
  6. Step 6: Final answer
    x = 126,385.13

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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.