Home / 156,943.37-216,579.28-85,325.20

Finding the Fourth Proportional to 156,943.37, 216,579.28 and 85,325.20

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Solution

The fourth proportional to 156,943.37, 216,579.28 and 85,325.20 is: 117,747.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,943.37 : 216,579.28 = 85,325.20 : x
  2. Step 2: Convert to fraction form
    156,943.37/216,579.28 = 85,325.20/x
  3. Step 3: Cross multiply
    156,943.37x = 216,579.28 × 85,325.20
  4. Step 4: Simplify right side
    156,943.37x = 18,479,670,381.86
  5. Step 5: Solve for x
    x = 18,479,670,381.86/156,943.37
  6. Step 6: Final answer
    x = 117,747.38

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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.