Home / 142,907.17-197,219.77-79,243.60

Finding the Fourth Proportional to 142,907.17, 197,219.77 and 79,243.60

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Solution

The fourth proportional to 142,907.17, 197,219.77 and 79,243.60 is: 109,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,907.17 : 197,219.77 = 79,243.60 : x
  2. Step 2: Convert to fraction form
    142,907.17/197,219.77 = 79,243.60/x
  3. Step 3: Cross multiply
    142,907.17x = 197,219.77 × 79,243.60
  4. Step 4: Simplify right side
    142,907.17x = 15,628,404,565.97
  5. Step 5: Solve for x
    x = 15,628,404,565.97/142,907.17
  6. Step 6: Final answer
    x = 109,360.53

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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.