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Finding the Fourth Proportional to 156,133.50, 215,493.42 and 89,065.50

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Solution

The fourth proportional to 156,133.50, 215,493.42 and 89,065.50 is: 122,927.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,133.50 : 215,493.42 = 89,065.50 : x
  2. Step 2: Convert to fraction form
    156,133.50/215,493.42 = 89,065.50/x
  3. Step 3: Cross multiply
    156,133.50x = 215,493.42 × 89,065.50
  4. Step 4: Simplify right side
    156,133.50x = 19,193,029,199.01
  5. Step 5: Solve for x
    x = 19,193,029,199.01/156,133.50
  6. Step 6: Final answer
    x = 122,927.04

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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.