Home / 156,628.28-216,149.10-85,009.16

Finding the Fourth Proportional to 156,628.28, 216,149.10 and 85,009.16

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Solution

The fourth proportional to 156,628.28, 216,149.10 and 85,009.16 is: 117,313.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,628.28 : 216,149.10 = 85,009.16 : x
  2. Step 2: Convert to fraction form
    156,628.28/216,149.10 = 85,009.16/x
  3. Step 3: Cross multiply
    156,628.28x = 216,149.10 × 85,009.16
  4. Step 4: Simplify right side
    156,628.28x = 18,374,653,425.76
  5. Step 5: Solve for x
    x = 18,374,653,425.76/156,628.28
  6. Step 6: Final answer
    x = 117,313.77

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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.