Home / 128,026.60-191,586.30-111,567.40

Finding the Fourth Proportional to 128,026.60, 191,586.30 and 111,567.40

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Solution

The fourth proportional to 128,026.60, 191,586.30 and 111,567.40 is: 166,955.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,026.60 : 191,586.30 = 111,567.40 : x
  2. Step 2: Convert to fraction form
    128,026.60/191,586.30 = 111,567.40/x
  3. Step 3: Cross multiply
    128,026.60x = 191,586.30 × 111,567.40
  4. Step 4: Simplify right side
    128,026.60x = 21,374,785,366.62
  5. Step 5: Solve for x
    x = 21,374,785,366.62/128,026.60
  6. Step 6: Final answer
    x = 166,955.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.