Home / 128,594.06-177,362.40-112,650.84

Finding the Fourth Proportional to 128,594.06, 177,362.40 and 112,650.84

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Solution

The fourth proportional to 128,594.06, 177,362.40 and 112,650.84 is: 155,372.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,594.06 : 177,362.40 = 112,650.84 : x
  2. Step 2: Convert to fraction form
    128,594.06/177,362.40 = 112,650.84/x
  3. Step 3: Cross multiply
    128,594.06x = 177,362.40 × 112,650.84
  4. Step 4: Simplify right side
    128,594.06x = 19,980,023,344.42
  5. Step 5: Solve for x
    x = 19,980,023,344.42/128,594.06
  6. Step 6: Final answer
    x = 155,372.83

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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.