Home / 142,758.40-197,010.48-79,103.20

Finding the Fourth Proportional to 142,758.40, 197,010.48 and 79,103.20

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Solution

The fourth proportional to 142,758.40, 197,010.48 and 79,103.20 is: 109,164.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,758.40 : 197,010.48 = 79,103.20 : x
  2. Step 2: Convert to fraction form
    142,758.40/197,010.48 = 79,103.20/x
  3. Step 3: Cross multiply
    142,758.40x = 197,010.48 × 79,103.20
  4. Step 4: Simplify right side
    142,758.40x = 15,584,159,401.54
  5. Step 5: Solve for x
    x = 15,584,159,401.54/142,758.40
  6. Step 6: Final answer
    x = 109,164.57

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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.