Home / 142,856.12-197,151.36-79,199.84

Finding the Fourth Proportional to 142,856.12, 197,151.36 and 79,199.84

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Solution

The fourth proportional to 142,856.12, 197,151.36 and 79,199.84 is: 109,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,856.12 : 197,151.36 = 79,199.84 : x
  2. Step 2: Convert to fraction form
    142,856.12/197,151.36 = 79,199.84/x
  3. Step 3: Cross multiply
    142,856.12x = 197,151.36 × 79,199.84
  4. Step 4: Simplify right side
    142,856.12x = 15,614,356,167.78
  5. Step 5: Solve for x
    x = 15,614,356,167.78/142,856.12
  6. Step 6: Final answer
    x = 109,301.28

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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.