Home / 156,120.40-215,445.54-84,501.64

Finding the Fourth Proportional to 156,120.40, 215,445.54 and 84,501.64

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Solution

The fourth proportional to 156,120.40, 215,445.54 and 84,501.64 is: 116,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,120.40 : 215,445.54 = 84,501.64 : x
  2. Step 2: Convert to fraction form
    156,120.40/215,445.54 = 84,501.64/x
  3. Step 3: Cross multiply
    156,120.40x = 215,445.54 × 84,501.64
  4. Step 4: Simplify right side
    156,120.40x = 18,205,501,460.69
  5. Step 5: Solve for x
    x = 18,205,501,460.69/156,120.40
  6. Step 6: Final answer
    x = 116,611.93

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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.