Home / 156,140.60-215,474.08-84,520.40

Finding the Fourth Proportional to 156,140.60, 215,474.08 and 84,520.40

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Solution

The fourth proportional to 156,140.60, 215,474.08 and 84,520.40 is: 116,638.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,140.60 : 215,474.08 = 84,520.40 : x
  2. Step 2: Convert to fraction form
    156,140.60/215,474.08 = 84,520.40/x
  3. Step 3: Cross multiply
    156,140.60x = 215,474.08 × 84,520.40
  4. Step 4: Simplify right side
    156,140.60x = 18,211,955,431.23
  5. Step 5: Solve for x
    x = 18,211,955,431.23/156,140.60
  6. Step 6: Final answer
    x = 116,638.18

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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.