Home / 128,592.11-177,459.96-73,400.31

Finding the Fourth Proportional to 128,592.11, 177,459.96 and 73,400.31

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Solution

The fourth proportional to 128,592.11, 177,459.96 and 73,400.31 is: 101,294.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,592.11 : 177,459.96 = 73,400.31 : x
  2. Step 2: Convert to fraction form
    128,592.11/177,459.96 = 73,400.31/x
  3. Step 3: Cross multiply
    128,592.11x = 177,459.96 × 73,400.31
  4. Step 4: Simplify right side
    128,592.11x = 13,025,616,076.59
  5. Step 5: Solve for x
    x = 13,025,616,076.59/128,592.11
  6. Step 6: Final answer
    x = 101,294.05

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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.