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Finding the Fourth Proportional to 156,624.64, 216,140.20 and 85,004.71

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Solution

The fourth proportional to 156,624.64, 216,140.20 and 85,004.71 is: 117,305.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,624.64 : 216,140.20 = 85,004.71 : x
  2. Step 2: Convert to fraction form
    156,624.64/216,140.20 = 85,004.71/x
  3. Step 3: Cross multiply
    156,624.64x = 216,140.20 × 85,004.71
  4. Step 4: Simplify right side
    156,624.64x = 18,372,935,020.34
  5. Step 5: Solve for x
    x = 18,372,935,020.34/156,624.64
  6. Step 6: Final answer
    x = 117,305.52

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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.