Home / 142,474.88-196,615.53-78,816.98

Finding the Fourth Proportional to 142,474.88, 196,615.53 and 78,816.98

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Solution

The fourth proportional to 142,474.88, 196,615.53 and 78,816.98 is: 108,767.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,474.88 : 196,615.53 = 78,816.98 : x
  2. Step 2: Convert to fraction form
    142,474.88/196,615.53 = 78,816.98/x
  3. Step 3: Cross multiply
    142,474.88x = 196,615.53 × 78,816.98
  4. Step 4: Simplify right side
    142,474.88x = 15,496,641,312.62
  5. Step 5: Solve for x
    x = 15,496,641,312.62/142,474.88
  6. Step 6: Final answer
    x = 108,767.54

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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.