Home / 128,353.38-177,112.26-70,984.91

Finding the Fourth Proportional to 128,353.38, 177,112.26 and 70,984.91

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Solution

The fourth proportional to 128,353.38, 177,112.26 and 70,984.91 is: 97,950.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,353.38 : 177,112.26 = 70,984.91 : x
  2. Step 2: Convert to fraction form
    128,353.38/177,112.26 = 70,984.91/x
  3. Step 3: Cross multiply
    128,353.38x = 177,112.26 × 70,984.91
  4. Step 4: Simplify right side
    128,353.38x = 12,572,298,278.78
  5. Step 5: Solve for x
    x = 12,572,298,278.78/128,353.38
  6. Step 6: Final answer
    x = 97,950.66

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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.