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Finding the Fourth Proportional to 144,038.40, 198,784.31 and 79,520.46

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Solution

The fourth proportional to 144,038.40, 198,784.31 and 79,520.46 is: 109,744.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,038.40 : 198,784.31 = 79,520.46 : x
  2. Step 2: Convert to fraction form
    144,038.40/198,784.31 = 79,520.46/x
  3. Step 3: Cross multiply
    144,038.40x = 198,784.31 × 79,520.46
  4. Step 4: Simplify right side
    144,038.40x = 15,807,419,771.98
  5. Step 5: Solve for x
    x = 15,807,419,771.98/144,038.40
  6. Step 6: Final answer
    x = 109,744.48

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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.