Home / 128,582.50-177,445.68-74,133.59

Finding the Fourth Proportional to 128,582.50, 177,445.68 and 74,133.59

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Solution

The fourth proportional to 128,582.50, 177,445.68 and 74,133.59 is: 102,305.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,582.50 : 177,445.68 = 74,133.59 : x
  2. Step 2: Convert to fraction form
    128,582.50/177,445.68 = 74,133.59/x
  3. Step 3: Cross multiply
    128,582.50x = 177,445.68 × 74,133.59
  4. Step 4: Simplify right side
    128,582.50x = 13,154,685,288.39
  5. Step 5: Solve for x
    x = 13,154,685,288.39/128,582.50
  6. Step 6: Final answer
    x = 102,305.41

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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.