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Finding the Fourth Proportional to 120,762.28, 166,692.90 and 70,503.40

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Solution

The fourth proportional to 120,762.28, 166,692.90 and 70,503.40 is: 97,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,762.28 : 166,692.90 = 70,503.40 : x
  2. Step 2: Convert to fraction form
    120,762.28/166,692.90 = 70,503.40/x
  3. Step 3: Cross multiply
    120,762.28x = 166,692.90 × 70,503.40
  4. Step 4: Simplify right side
    120,762.28x = 11,752,416,205.86
  5. Step 5: Solve for x
    x = 11,752,416,205.86/120,762.28
  6. Step 6: Final answer
    x = 97,318.60

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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.