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Finding the Fourth Proportional to 156,865.36, 216,473.52 and 85,244.08

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Solution

The fourth proportional to 156,865.36, 216,473.52 and 85,244.08 is: 117,636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,865.36 : 216,473.52 = 85,244.08 : x
  2. Step 2: Convert to fraction form
    156,865.36/216,473.52 = 85,244.08/x
  3. Step 3: Cross multiply
    156,865.36x = 216,473.52 × 85,244.08
  4. Step 4: Simplify right side
    156,865.36x = 18,453,086,056.76
  5. Step 5: Solve for x
    x = 18,453,086,056.76/156,865.36
  6. Step 6: Final answer
    x = 117,636.46

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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.