Home / 128,926.69-177,929.46-71,569.58

Finding the Fourth Proportional to 128,926.69, 177,929.46 and 71,569.58

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Solution

The fourth proportional to 128,926.69, 177,929.46 and 71,569.58 is: 98,771.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,926.69 : 177,929.46 = 71,569.58 : x
  2. Step 2: Convert to fraction form
    128,926.69/177,929.46 = 71,569.58/x
  3. Step 3: Cross multiply
    128,926.69x = 177,929.46 × 71,569.58
  4. Step 4: Simplify right side
    128,926.69x = 12,734,335,832.18
  5. Step 5: Solve for x
    x = 12,734,335,832.18/128,926.69
  6. Step 6: Final answer
    x = 98,771.92

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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.