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Finding the Fourth Proportional to 120,802.67, 166,715.40 and 67,087.70

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Solution

The fourth proportional to 120,802.67, 166,715.40 and 67,087.70 is: 92,585.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,802.67 : 166,715.40 = 67,087.70 : x
  2. Step 2: Convert to fraction form
    120,802.67/166,715.40 = 67,087.70/x
  3. Step 3: Cross multiply
    120,802.67x = 166,715.40 × 67,087.70
  4. Step 4: Simplify right side
    120,802.67x = 11,184,552,740.58
  5. Step 5: Solve for x
    x = 11,184,552,740.58/120,802.67
  6. Step 6: Final answer
    x = 92,585.31

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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.