Home / 128,943.10-193,414.65-89,577.10

Finding the Fourth Proportional to 128,943.10, 193,414.65 and 89,577.10

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Solution

The fourth proportional to 128,943.10, 193,414.65 and 89,577.10 is: 134,365.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,943.10 : 193,414.65 = 89,577.10 : x
  2. Step 2: Convert to fraction form
    128,943.10/193,414.65 = 89,577.10/x
  3. Step 3: Cross multiply
    128,943.10x = 193,414.65 × 89,577.10
  4. Step 4: Simplify right side
    128,943.10x = 17,325,523,444.52
  5. Step 5: Solve for x
    x = 17,325,523,444.52/128,943.10
  6. Step 6: Final answer
    x = 134,365.65

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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.