Home / 142,879.95-197,186.40-79,238.25

Finding the Fourth Proportional to 142,879.95, 197,186.40 and 79,238.25

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Solution

The fourth proportional to 142,879.95, 197,186.40 and 79,238.25 is: 109,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,879.95 : 197,186.40 = 79,238.25 : x
  2. Step 2: Convert to fraction form
    142,879.95/197,186.40 = 79,238.25/x
  3. Step 3: Cross multiply
    142,879.95x = 197,186.40 × 79,238.25
  4. Step 4: Simplify right side
    142,879.95x = 15,624,705,259.80
  5. Step 5: Solve for x
    x = 15,624,705,259.80/142,879.95
  6. Step 6: Final answer
    x = 109,355.48

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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.