Home / 145,512.05-200,815.81-88,190.78

Finding the Fourth Proportional to 145,512.05, 200,815.81 and 88,190.78

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Solution

The fourth proportional to 145,512.05, 200,815.81 and 88,190.78 is: 121,708.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,512.05 : 200,815.81 = 88,190.78 : x
  2. Step 2: Convert to fraction form
    145,512.05/200,815.81 = 88,190.78/x
  3. Step 3: Cross multiply
    145,512.05x = 200,815.81 × 88,190.78
  4. Step 4: Simplify right side
    145,512.05x = 17,710,101,695.68
  5. Step 5: Solve for x
    x = 17,710,101,695.68/145,512.05
  6. Step 6: Final answer
    x = 121,708.84

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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.