Home / 142,782.48-197,040.98-79,121.34

Finding the Fourth Proportional to 142,782.48, 197,040.98 and 79,121.34

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Solution

The fourth proportional to 142,782.48, 197,040.98 and 79,121.34 is: 109,188.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,782.48 : 197,040.98 = 79,121.34 : x
  2. Step 2: Convert to fraction form
    142,782.48/197,040.98 = 79,121.34/x
  3. Step 3: Cross multiply
    142,782.48x = 197,040.98 × 79,121.34
  4. Step 4: Simplify right side
    142,782.48x = 15,590,146,372.51
  5. Step 5: Solve for x
    x = 15,590,146,372.51/142,782.48
  6. Step 6: Final answer
    x = 109,188.09

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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.