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Finding the Fourth Proportional to 139,010, 191,992.20 and 94,220.24

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Solution

The fourth proportional to 139,010, 191,992.20 and 94,220.24 is: 130,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,010 : 191,992.20 = 94,220.24 : x
  2. Step 2: Convert to fraction form
    139,010/191,992.20 = 94,220.24/x
  3. Step 3: Cross multiply
    139,010x = 191,992.20 × 94,220.24
  4. Step 4: Simplify right side
    139,010x = 18,089,551,162.13
  5. Step 5: Solve for x
    x = 18,089,551,162.13/139,010
  6. Step 6: Final answer
    x = 130,131.29

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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.