Home / 128,266.48-177,003.75-70,902.37

Finding the Fourth Proportional to 128,266.48, 177,003.75 and 70,902.37

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Solution

The fourth proportional to 128,266.48, 177,003.75 and 70,902.37 is: 97,843.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,266.48 : 177,003.75 = 70,902.37 : x
  2. Step 2: Convert to fraction form
    128,266.48/177,003.75 = 70,902.37/x
  3. Step 3: Cross multiply
    128,266.48x = 177,003.75 × 70,902.37
  4. Step 4: Simplify right side
    128,266.48x = 12,549,985,373.89
  5. Step 5: Solve for x
    x = 12,549,985,373.89/128,266.48
  6. Step 6: Final answer
    x = 97,843.06

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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.