Home / 145,606.04-200,903.10-81,920.60

Finding the Fourth Proportional to 145,606.04, 200,903.10 and 81,920.60

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Solution

The fourth proportional to 145,606.04, 200,903.10 and 81,920.60 is: 113,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,606.04 : 200,903.10 = 81,920.60 : x
  2. Step 2: Convert to fraction form
    145,606.04/200,903.10 = 81,920.60/x
  3. Step 3: Cross multiply
    145,606.04x = 200,903.10 × 81,920.60
  4. Step 4: Simplify right side
    145,606.04x = 16,458,102,493.86
  5. Step 5: Solve for x
    x = 16,458,102,493.86/145,606.04
  6. Step 6: Final answer
    x = 113,031.73

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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.