Home / 128,761.47-193,102.68-89,035.70

Finding the Fourth Proportional to 128,761.47, 193,102.68 and 89,035.70

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Solution

The fourth proportional to 128,761.47, 193,102.68 and 89,035.70 is: 133,526.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,761.47 : 193,102.68 = 89,035.70 : x
  2. Step 2: Convert to fraction form
    128,761.47/193,102.68 = 89,035.70/x
  3. Step 3: Cross multiply
    128,761.47x = 193,102.68 × 89,035.70
  4. Step 4: Simplify right side
    128,761.47x = 17,193,031,840.50
  5. Step 5: Solve for x
    x = 17,193,031,840.50/128,761.47
  6. Step 6: Final answer
    x = 133,526.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.