Home / 156,423.35-215,865.71-84,803.05

Finding the Fourth Proportional to 156,423.35, 215,865.71 and 84,803.05

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Solution

The fourth proportional to 156,423.35, 215,865.71 and 84,803.05 is: 117,029.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,423.35 : 215,865.71 = 84,803.05 : x
  2. Step 2: Convert to fraction form
    156,423.35/215,865.71 = 84,803.05/x
  3. Step 3: Cross multiply
    156,423.35x = 215,865.71 × 84,803.05
  4. Step 4: Simplify right side
    156,423.35x = 18,306,070,762.24
  5. Step 5: Solve for x
    x = 18,306,070,762.24/156,423.35
  6. Step 6: Final answer
    x = 117,029.01

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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.