Home / 128,496.76-177,344.18-74,038.33

Finding the Fourth Proportional to 128,496.76, 177,344.18 and 74,038.33

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Solution

The fourth proportional to 128,496.76, 177,344.18 and 74,038.33 is: 102,183.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,496.76 : 177,344.18 = 74,038.33 : x
  2. Step 2: Convert to fraction form
    128,496.76/177,344.18 = 74,038.33/x
  3. Step 3: Cross multiply
    128,496.76x = 177,344.18 × 74,038.33
  4. Step 4: Simplify right side
    128,496.76x = 13,130,266,922.42
  5. Step 5: Solve for x
    x = 13,130,266,922.42/128,496.76
  6. Step 6: Final answer
    x = 102,183.64

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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.