Home / 156,879.46-216,496.85-85,264.09

Finding the Fourth Proportional to 156,879.46, 216,496.85 and 85,264.09

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Solution

The fourth proportional to 156,879.46, 216,496.85 and 85,264.09 is: 117,666.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,879.46 : 216,496.85 = 85,264.09 : x
  2. Step 2: Convert to fraction form
    156,879.46/216,496.85 = 85,264.09/x
  3. Step 3: Cross multiply
    156,879.46x = 216,496.85 × 85,264.09
  4. Step 4: Simplify right side
    156,879.46x = 18,459,406,903.12
  5. Step 5: Solve for x
    x = 18,459,406,903.12/156,879.46
  6. Step 6: Final answer
    x = 117,666.18

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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.