Home / 145,003.41-200,106.07-81,342.57

Finding the Fourth Proportional to 145,003.41, 200,106.07 and 81,342.57

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Solution

The fourth proportional to 145,003.41, 200,106.07 and 81,342.57 is: 112,253.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,003.41 : 200,106.07 = 81,342.57 : x
  2. Step 2: Convert to fraction form
    145,003.41/200,106.07 = 81,342.57/x
  3. Step 3: Cross multiply
    145,003.41x = 200,106.07 × 81,342.57
  4. Step 4: Simplify right side
    145,003.41x = 16,277,141,803.04
  5. Step 5: Solve for x
    x = 16,277,141,803.04/145,003.41
  6. Step 6: Final answer
    x = 112,253.51

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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.