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Finding the Fourth Proportional to 120,365.69, 180,490.21 and 60,368.38

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Solution

The fourth proportional to 120,365.69, 180,490.21 and 60,368.38 is: 90,523.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,365.69 : 180,490.21 = 60,368.38 : x
  2. Step 2: Convert to fraction form
    120,365.69/180,490.21 = 60,368.38/x
  3. Step 3: Cross multiply
    120,365.69x = 180,490.21 × 60,368.38
  4. Step 4: Simplify right side
    120,365.69x = 10,895,900,981.41
  5. Step 5: Solve for x
    x = 10,895,900,981.41/120,365.69
  6. Step 6: Final answer
    x = 90,523.32

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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.