Home / 128,258.42-176,996.07-71,669.79

Finding the Fourth Proportional to 128,258.42, 176,996.07 and 71,669.79

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Solution

The fourth proportional to 128,258.42, 176,996.07 and 71,669.79 is: 98,904.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,258.42 : 176,996.07 = 71,669.79 : x
  2. Step 2: Convert to fraction form
    128,258.42/176,996.07 = 71,669.79/x
  3. Step 3: Cross multiply
    128,258.42x = 176,996.07 × 71,669.79
  4. Step 4: Simplify right side
    128,258.42x = 12,685,271,167.73
  5. Step 5: Solve for x
    x = 12,685,271,167.73/128,258.42
  6. Step 6: Final answer
    x = 98,904.01

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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.