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Finding the Fourth Proportional to 120,712.77, 166,600.98 and 72,316.77

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Solution

The fourth proportional to 120,712.77, 166,600.98 and 72,316.77 is: 99,807.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,712.77 : 166,600.98 = 72,316.77 : x
  2. Step 2: Convert to fraction form
    120,712.77/166,600.98 = 72,316.77/x
  3. Step 3: Cross multiply
    120,712.77x = 166,600.98 × 72,316.77
  4. Step 4: Simplify right side
    120,712.77x = 12,048,044,580.80
  5. Step 5: Solve for x
    x = 12,048,044,580.80/120,712.77
  6. Step 6: Final answer
    x = 99,807.54

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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.