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Finding the Fourth Proportional to 156,716.16, 216,262.70 and 85,094.70

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Solution

The fourth proportional to 156,716.16, 216,262.70 and 85,094.70 is: 117,427.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,716.16 : 216,262.70 = 85,094.70 : x
  2. Step 2: Convert to fraction form
    156,716.16/216,262.70 = 85,094.70/x
  3. Step 3: Cross multiply
    156,716.16x = 216,262.70 × 85,094.70
  4. Step 4: Simplify right side
    156,716.16x = 18,402,809,577.69
  5. Step 5: Solve for x
    x = 18,402,809,577.69/156,716.16
  6. Step 6: Final answer
    x = 117,427.64

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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.