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Finding the Fourth Proportional to 128,582.92, 177,326.04 and 88,225.48

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Solution

The fourth proportional to 128,582.92, 177,326.04 and 88,225.48 is: 121,669.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,582.92 : 177,326.04 = 88,225.48 : x
  2. Step 2: Convert to fraction form
    128,582.92/177,326.04 = 88,225.48/x
  3. Step 3: Cross multiply
    128,582.92x = 177,326.04 × 88,225.48
  4. Step 4: Simplify right side
    128,582.92x = 15,644,674,995.50
  5. Step 5: Solve for x
    x = 15,644,674,995.50/128,582.92
  6. Step 6: Final answer
    x = 121,669.93

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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.