Home / 142,999.28-197,329.56-79,334.96

Finding the Fourth Proportional to 142,999.28, 197,329.56 and 79,334.96

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Solution

The fourth proportional to 142,999.28, 197,329.56 and 79,334.96 is: 109,477.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,999.28 : 197,329.56 = 79,334.96 : x
  2. Step 2: Convert to fraction form
    142,999.28/197,329.56 = 79,334.96/x
  3. Step 3: Cross multiply
    142,999.28x = 197,329.56 × 79,334.96
  4. Step 4: Simplify right side
    142,999.28x = 15,655,132,749.42
  5. Step 5: Solve for x
    x = 15,655,132,749.42/142,999.28
  6. Step 6: Final answer
    x = 109,477.00

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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.