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Finding the Fourth Proportional to 139,445.67, 192,427.66 and 79,017.04

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Solution

The fourth proportional to 139,445.67, 192,427.66 and 79,017.04 is: 109,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,445.67 : 192,427.66 = 79,017.04 : x
  2. Step 2: Convert to fraction form
    139,445.67/192,427.66 = 79,017.04/x
  3. Step 3: Cross multiply
    139,445.67x = 192,427.66 × 79,017.04
  4. Step 4: Simplify right side
    139,445.67x = 15,205,064,446.63
  5. Step 5: Solve for x
    x = 15,205,064,446.63/139,445.67
  6. Step 6: Final answer
    x = 109,039.34

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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.