Home / 128,662.07-177,548.53-71,303.84

Finding the Fourth Proportional to 128,662.07, 177,548.53 and 71,303.84

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Solution

The fourth proportional to 128,662.07, 177,548.53 and 71,303.84 is: 98,396.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,662.07 : 177,548.53 = 71,303.84 : x
  2. Step 2: Convert to fraction form
    128,662.07/177,548.53 = 71,303.84/x
  3. Step 3: Cross multiply
    128,662.07x = 177,548.53 × 71,303.84
  4. Step 4: Simplify right side
    128,662.07x = 12,659,892,908.11
  5. Step 5: Solve for x
    x = 12,659,892,908.11/128,662.07
  6. Step 6: Final answer
    x = 98,396.46

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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.