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Finding the Fourth Proportional to 156,793.48, 216,376.54 and 85,174.08

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Solution

The fourth proportional to 156,793.48, 216,376.54 and 85,174.08 is: 117,541.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,793.48 : 216,376.54 = 85,174.08 : x
  2. Step 2: Convert to fraction form
    156,793.48/216,376.54 = 85,174.08/x
  3. Step 3: Cross multiply
    156,793.48x = 216,376.54 × 85,174.08
  4. Step 4: Simplify right side
    156,793.48x = 18,429,672,728.08
  5. Step 5: Solve for x
    x = 18,429,672,728.08/156,793.48
  6. Step 6: Final answer
    x = 117,541.07

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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.