Home / 128,675.08-177,581.45-74,237

Finding the Fourth Proportional to 128,675.08, 177,581.45 and 74,237

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Solution

The fourth proportional to 128,675.08, 177,581.45 and 74,237 is: 102,452.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,675.08 : 177,581.45 = 74,237 : x
  2. Step 2: Convert to fraction form
    128,675.08/177,581.45 = 74,237/x
  3. Step 3: Cross multiply
    128,675.08x = 177,581.45 × 74,237
  4. Step 4: Simplify right side
    128,675.08x = 13,183,113,732.47
  5. Step 5: Solve for x
    x = 13,183,113,732.47/128,675.08
  6. Step 6: Final answer
    x = 102,452.74

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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.