Home / 142,609.95-196,739.94-85,989.87

Finding the Fourth Proportional to 142,609.95, 196,739.94 and 85,989.87

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Solution

The fourth proportional to 142,609.95, 196,739.94 and 85,989.87 is: 118,628.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,609.95 : 196,739.94 = 85,989.87 : x
  2. Step 2: Convert to fraction form
    142,609.95/196,739.94 = 85,989.87/x
  3. Step 3: Cross multiply
    142,609.95x = 196,739.94 × 85,989.87
  4. Step 4: Simplify right side
    142,609.95x = 16,917,641,864.41
  5. Step 5: Solve for x
    x = 16,917,641,864.41/142,609.95
  6. Step 6: Final answer
    x = 118,628.76

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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.