Home / 128,346.42-177,046.96-74,625.50

Finding the Fourth Proportional to 128,346.42, 177,046.96 and 74,625.50

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Solution

The fourth proportional to 128,346.42, 177,046.96 and 74,625.50 is: 102,941.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,346.42 : 177,046.96 = 74,625.50 : x
  2. Step 2: Convert to fraction form
    128,346.42/177,046.96 = 74,625.50/x
  3. Step 3: Cross multiply
    128,346.42x = 177,046.96 × 74,625.50
  4. Step 4: Simplify right side
    128,346.42x = 13,212,217,913.48
  5. Step 5: Solve for x
    x = 13,212,217,913.48/128,346.42
  6. Step 6: Final answer
    x = 102,941.85

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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.