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Finding the Fourth Proportional to 120,110.70, 180,166.05 and 61,061.70

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Solution

The fourth proportional to 120,110.70, 180,166.05 and 61,061.70 is: 91,592.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,110.70 : 180,166.05 = 61,061.70 : x
  2. Step 2: Convert to fraction form
    120,110.70/180,166.05 = 61,061.70/x
  3. Step 3: Cross multiply
    120,110.70x = 180,166.05 × 61,061.70
  4. Step 4: Simplify right side
    120,110.70x = 11,001,245,295.29
  5. Step 5: Solve for x
    x = 11,001,245,295.29/120,110.70
  6. Step 6: Final answer
    x = 91,592.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.