Home / 128,154.27-176,847.24-71,564.43

Finding the Fourth Proportional to 128,154.27, 176,847.24 and 71,564.43

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Solution

The fourth proportional to 128,154.27, 176,847.24 and 71,564.43 is: 98,755.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,154.27 : 176,847.24 = 71,564.43 : x
  2. Step 2: Convert to fraction form
    128,154.27/176,847.24 = 71,564.43/x
  3. Step 3: Cross multiply
    128,154.27x = 176,847.24 × 71,564.43
  4. Step 4: Simplify right side
    128,154.27x = 12,655,971,927.67
  5. Step 5: Solve for x
    x = 12,655,971,927.67/128,154.27
  6. Step 6: Final answer
    x = 98,755.76

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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.