Home / 142,922.20-197,244.75-79,280.50

Finding the Fourth Proportional to 142,922.20, 197,244.75 and 79,280.50

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Solution

The fourth proportional to 142,922.20, 197,244.75 and 79,280.50 is: 109,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,922.20 : 197,244.75 = 79,280.50 : x
  2. Step 2: Convert to fraction form
    142,922.20/197,244.75 = 79,280.50/x
  3. Step 3: Cross multiply
    142,922.20x = 197,244.75 × 79,280.50
  4. Step 4: Simplify right side
    142,922.20x = 15,637,662,402.38
  5. Step 5: Solve for x
    x = 15,637,662,402.38/142,922.20
  6. Step 6: Final answer
    x = 109,413.81

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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.