Home / 156,358.16-215,797.42-99,002.81

Finding the Fourth Proportional to 156,358.16, 215,797.42 and 99,002.81

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Solution

The fourth proportional to 156,358.16, 215,797.42 and 99,002.81 is: 136,638.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,358.16 : 215,797.42 = 99,002.81 : x
  2. Step 2: Convert to fraction form
    156,358.16/215,797.42 = 99,002.81/x
  3. Step 3: Cross multiply
    156,358.16x = 215,797.42 × 99,002.81
  4. Step 4: Simplify right side
    156,358.16x = 21,364,550,970.75
  5. Step 5: Solve for x
    x = 21,364,550,970.75/156,358.16
  6. Step 6: Final answer
    x = 136,638.54

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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.