Home / 128,281.83-177,028.89-70,138.76

Finding the Fourth Proportional to 128,281.83, 177,028.89 and 70,138.76

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Solution

The fourth proportional to 128,281.83, 177,028.89 and 70,138.76 is: 96,791.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,281.83 : 177,028.89 = 70,138.76 : x
  2. Step 2: Convert to fraction form
    128,281.83/177,028.89 = 70,138.76/x
  3. Step 3: Cross multiply
    128,281.83x = 177,028.89 × 70,138.76
  4. Step 4: Simplify right side
    128,281.83x = 12,416,587,070.93
  5. Step 5: Solve for x
    x = 12,416,587,070.93/128,281.83
  6. Step 6: Final answer
    x = 96,791.47

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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.