Home / 128,520.03-177,267.48-89,693.03

Finding the Fourth Proportional to 128,520.03, 177,267.48 and 89,693.03

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Solution

The fourth proportional to 128,520.03, 177,267.48 and 89,693.03 is: 123,713.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,520.03 : 177,267.48 = 89,693.03 : x
  2. Step 2: Convert to fraction form
    128,520.03/177,267.48 = 89,693.03/x
  3. Step 3: Cross multiply
    128,520.03x = 177,267.48 × 89,693.03
  4. Step 4: Simplify right side
    128,520.03x = 15,899,657,401.66
  5. Step 5: Solve for x
    x = 15,899,657,401.66/128,520.03
  6. Step 6: Final answer
    x = 123,713.46

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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.