Home / 156,078.18-215,387.55-84,458.18

Finding the Fourth Proportional to 156,078.18, 215,387.55 and 84,458.18

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Solution

The fourth proportional to 156,078.18, 215,387.55 and 84,458.18 is: 116,552.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,078.18 : 215,387.55 = 84,458.18 : x
  2. Step 2: Convert to fraction form
    156,078.18/215,387.55 = 84,458.18/x
  3. Step 3: Cross multiply
    156,078.18x = 215,387.55 × 84,458.18
  4. Step 4: Simplify right side
    156,078.18x = 18,191,239,390.72
  5. Step 5: Solve for x
    x = 18,191,239,390.72/156,078.18
  6. Step 6: Final answer
    x = 116,552.10

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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.